A researcher finds that the correlation between variable A and variable B is r = +.20. She also finds that the correlation between variable C and variable B is r = -.40. Which relationship is scientifically more useful and by

6,671 questions
1. statistics

A researcher finds that the correlation between variable A and variable B is r = +.20. She also finds that the correlation between variable C and variable B is r = -.40. Which relationship is scientifically more useful and by how much?

asked by tiph on May 29, 2014
2. Statistics in Psychology

A researcher finds that the correlation between variable A and variable B is r= 5 1.20. She also finds that the correlation between variable C and variable B is r= 5 2.40. Which relationship is scientifically more useful and by how much?

asked by Annie on February 10, 2014
3. Statistics

A researcher finds that the correlation between variable A and variable B is r = 1.20. She also finds that the correlation between variable C and variable B is r = 2.40. Which relationship is scientifically more useful and by how much?

asked by baegirl on June 13, 2015
4. statistics/psych

Find TWO media examples of two types of correlations (explained below). You will have to do some research to find these. Next: (1) Find one media example (don�t make up your own) of a correlation that could be argued to be spurious (third variable).

asked by ashley on November 16, 2011
5. statistics

In a correlation study, we seek to determine; *if the IV cause an outcome in the DV. *Which variable is the cause and which variable is the effect. *The direction of causation. *How well one variable predicts another variable.

asked by erica on November 24, 2014
6. Math help

1. The number of students present in class & the number of empty chairs Type of correlation: Justification: Independent variable: Dependent variable: 2. Speed of car & distance traveled to complete stop after brakes are applied Type of correlation:

asked by Anonymous on April 2, 2014
7. MATH

What type of coorelation does this haved) a middle school student's weight and height from birth to present--- NO COORELATION A correlation indicates the degree of linear relationship between two variables. A positive (+) correlation indicates that both

asked by Erin on May 24, 2007
8. Adult Development and life Assessment

What do we call the variable that is manipulated by an experimenter when conducting in experiment. 1. Independent VARIABLE 2. Dependent variable 3. Beased variable 4. Extraneous variable My answer: Independent variable

asked by Regina on November 25, 2012
9. Adult Development and life Assessment

What do we call the variable that is manipulated by an experimenter when conducting in experiment. 1. Independent VARIABLE 2. Dependent variable 3. Beased variable 4. Extraneous variable My answer: Independent variable

asked by Regina on November 24, 2012
10. biology

5. A researcher finds that blood alcohol levels cause progressive damage to the liver. All the mice in his study were fed the same amount and types of food. Different concentrations of alcohol were injected into each mouse. One group of mice does not

asked by hannah on October 8, 2013
11. Stats

In each of the four examples listed below, one of the given variables is independent (x) and one of the given variables is dependent (y). Indicate in each case which variable is independent and which variable is dependent. I. Rainfall; Crop yield II. Taxi

asked by Jen on October 19, 2011
12. Statistics

Please Help, thank you! A researcher measures the following scores for a group of people. The X variable is the number of errors on a math test, and the Y variable is the person’s level of satisfaction with his/her performance. (a) With such ratio

asked by baegirl on June 12, 2015
13. Statistics

A researcher measures the following scores for a group of people. The X variable is the number of errors on a math test, and the Y variable is the person’s level of satisfaction with his/her performance. (a) With such ratio scores, what should the

asked by J.T on October 13, 2014
14. multiple choice

In the statement, "Men are more violent than women," violence is the: a. dependent variable b.independent variable c. intervening variable d. control variable Can someone pls help.

asked by Jack on June 14, 2008
15. statistics

True or False: A zero population correlation coefficient between a pair of random variable means that there is no linear relationship between the random variable.

asked by iyra on February 8, 2010
16. Statistics

Which, if any, of the values listed below for a correlation coefficient indicate a situation where more than half of the variation in one variable is associated with variation in the other variable? -.7 1 .3 .6 .9 I was thinking B

asked by Mike on November 12, 2012
17. psychology

An experimenter is studying how time spent on a cell phone affects people's ability to drive safely. Driving the car is the: dependent variable. coefficient of correlation. independent variable. operational condition. Im between C and D. Leaning toward C.

asked by john on October 31, 2010
18. Psychology

An experimenter is studying how time spent on a cell phone affects people's ability to drive safely. Driving the car is the: dependent variable. coefficient of correlation. independent variable. operational condition. I think the answer is A but i am not

asked by Chloe on March 14, 2011
19. psychology

An experimenter wants to find out if drinking coffee makes people more alert. The amount of coffee a person drinks is the: hypothesis. dependent variable. independent variable. correlation coefficient.

asked by cindy on October 30, 2010
20. psychology

An experimenter wants to find out if drinking coffee makes people more alert. The amount of coffee a person drinks is the: A. hypothesis. B. dependent variable. C. independent variable. D. correlation coefficient.

asked by Anonymous on March 9, 2014
21. stats ?

A researcher investgating depression devises a study that contains the independent variable "Treatment," manipulated between-participants. Participants may experience "psychodynamic therapy," "cognitive behavioral therapy," "medication," or "waiting list

asked by ash on March 2, 2009
22. stats

A researcher investgating depression devises a study that contains the independent variable "Treatment," manipulated between-participants. Participants may experience "psychodynamic therapy," "cognitive behavioral therapy," "medication," or "waiting list

asked by ash on March 1, 2009
23. chemistry

Which of the answer choices is correctly defined as the variable in a controlled experiment that is purposely changed or manipulated? constant controlled variable dependent variable independent variable is it b?

asked by malia on September 21, 2017
24. Accounting

An investor who is a non-resident for US tax purposes who buys stock of a US company is engaging in tax planning that uses the a.entity variable b.time period variable c. jurisdiction variable d. character variable

asked by John on April 20, 2009
25. Psychological Statistics

TRUE OR FALSE. The Pearson correlation between X1 and Y is r = 0.50. When a second variable, X2, is added to the regression equation, we obtain R2 = 0.60. Adding the second variable increases the variability that is predicted by the regression equation for

asked by Cindy on October 17, 2018
26. Math

The term correlation refers to a statistical technique that is used to ____.​ measure and describe the linear relationship between two variables measure the magnitude of a variable measure the significance of a variable measure the fit of a model

asked by Annie on December 15, 2017
27. algebra

in a relationship between variables, what is the variable called that changes in response to another variable? a. function b. input function c. independent variable d. dependent variable

asked by john on November 9, 2017
28. Math

in a relationship between variable called that changes in response to another variable? function input function independent variable dependent variable (my choice)

asked by sam on November 1, 2013
29. Science

Which of the following best describes the dependent variable in an experiment? A- the variable that is measured B- the variable that is manipulated C- the variable that you can see D- the variable that is most common (My guess is A) Photosynthesis is the

asked by Skye on September 20, 2014
30. science

what should you ask yourself when looking for an independent variable in an experiment? I would ask whether that variable can be manipulated or not. Here is more info on experimental variables that might be helpful. An independent variable is the potential

asked by jasmine on March 29, 2007
31. Algebra

There are 4 problems that I don't understand how to solve so, please help me. A numerical explanation with words explanation would be nice. Thank you tutors. Rewrite each equation so it is in the form ax + b = c or x + d/e = f, where x is a variable. Then

asked by anon on December 9, 2015
32. Statistics

A researcher wants to study the effect of gender on mathematical ability of lyceum children. From the data gathered tried to construct a scatter diagram. He did not succeed to make it though. Why?   a. Had not collected enough data. b. He did not know how

asked by Susie on August 30, 2013
33. Stats

6. In each of the four examples listed below, one of the given variables is independent (x) and one of the given variables is dependent (y). Indicate in each case which variable is independent and which variable is dependent. I. Rainfall; Crop yield II.

asked by Jen on October 18, 2011
34. social psy

) Researcher wants to look at the correlation between class attendance and grade in class (higher numbers indicating a higher grade). The researcher found the following result r = .82. The correlation coefficient tells researchers two pieces of

asked by deb on October 3, 2011
35. Science

What happens to the density of the air in the balloon as it is heated? Also, based on this question.... What would be the Independent variable, Depended Variable, controlled Variable...

asked by Diana on January 13, 2016
36. Help

What happens to the density of the air in the balloon as it is heated? Also, based on this question.... What would be the Independent variable, Depended Variable, controlled Variable.

asked by Diana on January 14, 2016
37. Math help.

1. 1 • 12 numerical expression variable expression; a is the variable variable expression; there is no variable variable expression; l is the variable 2. f ÷ 7 variable expression; there is no variable numerical expression variable expression; g is the

asked by Anonymous on September 17, 2014
38. Physics~ ONE MOREE

Which of the following must the investigator measure during an experiment? independent variable dependent variable

asked by May on December 29, 2014
39. Psy

A researcher is measuring the heart rate of subjects as an index of anxiety. In this study, heart rate is 1) negatively correlated with anxiety 2) an independent variable 3) an operational definition of anxiety 4) a confounded variable i think its number 3

asked by Psy Help on December 19, 2007
40. science

what is a control ,variable, independent variable, experimental variabale, dependent variable

asked by hannah on September 11, 2007

Data plotted on a graph results in a line that slopes upward from left to right. This graph tells you that a)when one variable increases, the other variable decreases. or b) when one variable increases, the other variable increases?

asked by Angelo on October 11, 2010
42. Science

I have 8 questions and 1 question in the end that I don't need help with. Identify possible variables in the following situations. What variables can affect the sprouting of a bean seed? I think (I didn't answer yet so I'll just go with what I think oh and

asked by anon on August 20, 2015
43. college Psychology

I am having trouble describing the interaction (How does effect of one Independent variable depend on level of other independent variable and why?) My 1st independent variable is Type of Stimulus: with 2 levels pictures and words. My 2nd independent

asked by James on March 14, 2010
44. MATH help

Which of the following statements is true? A . The dependent variable is represented on the x-axis. B . The independent variable is also know as the output. C . The dependent variable is represented in the 2nd column of a table. D . The independent

asked by Miranda Lambert on January 12, 2016
45. algebra

which statement is not true about variable? a a variable is used to represent a qty whose values may change or vary b letters are often used as variable c a variable is a rule showing relationshopms amount quantities d known values can be substitues for

asked by marko on November 12, 2011
46. Math

In the equation c=9h, identify which variable is the independent variable and which is the dependent variable.

asked by Amy on January 28, 2015
47. MATH URGENT!!!

A researcher is interested in the effects of monetary incentives on task performance. She recruits 60 undergraduate business students and offers to pay them each \$5 for a 1 hour research session. She then randomly assigns these students to either a control

asked by Jill on November 21, 2011
48. Math help

Elizabeth bought 3-inch tomato plants at home depot. Each week after she bought the plants she measured their height. she recorded the data in the table below. Time(wks) 0 1 2 3 4 Height of tomato plants(in.)3 5 7 9 11 what is the Independent variable?

asked by Anonymous on April 13, 2014
49. Science

During a controlled experiment where you purposely change the temperature of the air in a room and you are measuring the effects on plant growth, what is the dependent variable? I am confused on this. Is the dependent variable plant growth or is the

asked by Patrick on October 3, 2018
50. Statistics

Consider the following multiple regression results. Using a= .05 as the significance level, identify all statistically significant predictors. In a relative sense, which variable has the strongest impact? What is the interpretation of the “constant”

asked by GG on September 5, 2011
51. math

everybody help!!!!!!!!!!!!i cant post it but its a graph and it do tomarow tell me wut a variable and wat i will dooooooooooooooooooo neeeeeeeee Well we'll need to know what the question is before we'll be able to help. So what is your question? well the

asked by chemiii on September 13, 2006
52. statistics

Healthy breakfast contains the rating of 77 cereals and the number of grams of sugar contained in each serving. A simple linear regression model considering "sugar" as the explanatory variable and "rating" as the response variable produced the following

asked by Gee on September 19, 2012
53. biology

i am in 9th grade biology and i am REALLY confused about the difference between controll variable, responding variable, manipulated variable and controll group. any help would be great. i have a test TOMORROW!!!!

asked by Morgan on December 3, 2008
54. Math

A university conducts a study of tobacco use among 1000 of its students. Researchers survey male volunteers and female volunteers to find the frequency of tobacco use. The study finds that, of the people surveyed, 250 men and 50 women regularly use

asked by faith on February 5, 2019
55. Science

There can be several controlled variables. If an experiment is to be useful, only one variable at a time can be manipulated intentionally. All other variables must be controlled throughout all parts of the experiment. If more than one variable is altered,

asked by anon on August 23, 2015
56. statistics

1.For 10 pairs of data, the correlation coefficient is computed to be r = -1. Wht do you know about the scatter diagram? 2.You are considering the most expensive purchase that you are likely to make: the purchase of a home. Identify at least five different

asked by Kasi on August 5, 2010
57. math solutions

solve the equation abx=cy for each of following the variable x the variable a the variable c solve the equation ay/x the variable y the variable z the variable x solve each of following for variable y 3y=ab ab=cy ayc=bx bx/y=R zy/x=b

asked by sherri on October 6, 2008
58. statistic

which is true about the response variable? i this used to be called the dependent variable. ii when graphing the data, the response variable is plotted along the x-axis only I only ii both I and ii neither I or ii

asked by helen on January 14, 2014
59. statistic

27. which is true about the response variable? i. this used to be called the independent variable. ii. when graphing the data, the response variable is plotted along the y-axis only i only ii both i and ii neither

asked by helen on January 14, 2014
60. statistics

Job Sat. INTR. EXTR. Benefits 5.2 5.5 6.8 1.4 5.1 5.5 5.5 5.4 5.8 5.2 4.6 6.2 5.5 5.3 5.7 2.3 3.2 4.7 5.6 4.5 5.2 5.5 5.5 5.4 5.1 5.2 4.6 6.2 5.8 5.3 5.7 2.3 5.3 4.7 5.6 4.5 5.9 5.4 5.6 5.4 3.7 6.2 5.5 6.2 5.5 5.2 4.6 6.2 5.8 5.3 5.7 2.3 5.3 4.7 5.6 4.5

asked by chris on September 21, 2010
61. Science/ Experiment

Directions: You are a medical researcher who has just "discovered" a new treatment for AIDS. Now you need to design an experiment to test its effectiveness. Using the follwoing questions as guidelines, plan your experiment. 1) What groups will you have in

asked by Jenny on January 23, 2008
62. Science

Directions: You are a medical researcher who has just "discovered" a new treatment for AIDS. Now you need to design an experiment to test its effectiveness. Using the follwoing questions as guidelines, plan your experiment. 1) What groups will you have in

asked by Jenny on January 20, 2008
63. math

Can someone please double check my answers (My answers are in Capital) 1. If you produce a million products a day and you want to test ten of them to determine if they are up to standard, which ones will you choose? a. The second ten B. TEN RANDOM UNITS c.

asked by mysterychicken on June 17, 2013
64. Science Experiment

Directions: You are a medical researcher who has just "discovered" a new treatment for AIDS. Now you need to design an experiment to test its effectiveness. Using the follwoing questions as guidelines, plan your experiment. 1) What groups will you have in

asked by Jenny on January 25, 2008
65. Psychology

Why do you believe that researchers would want to see if there isa correlation rather than just fully testing ech variable?

asked by Andrea on November 4, 2010
66. Computer Science

Suppose X is a random variable and Y = aX + b is a linear function of X. Show that the correlation of X and Y is 1 if a < 0.

asked by Jerry on October 25, 2013
67. social psy

I want to utilize a true experimental design to study the effects of classical music exposure on the cognitive development of newborns. a- What is an independent variable? b- What is a dependent variable? c-What is random assignment? d-Why is random

asked by deb on October 3, 2011
68. MATH

D. Sam and Pete have a job dog-sitting for their neighbor. He pays them \$5.00 for each hour they “sit”. Independent_______________________________ Dependent________________________________ I know the answer to independent I just need help with

asked by Austin on January 3, 2007
69. statistics

The data set healthy breakfast contains the ratings of 77 cereals and the number of grams of sugar contained in each searving. A simple linear regression model considering Sugar as the explanatory variable and Rating as the response variable produced the

asked by Gee on September 13, 2012
70. math

8 divided by 3 plus 6= You asked 8 divided by 3 plus 6= (8/3) + 6 = 2(2/3) + 6 or 8/3 + 18/3 = ??/3 I don't understand how to describe pairs of related variables what's the difference between dependent & independent variables I'm not what class your

asked by kyra on September 19, 2006
71. independent variable

What axis do you plot the independent variable and what axis do you plot the dependent variable? It does not matter. However, in the US it has become fashion in public schools and the pablum filled texts to suggest the horizontal axis be the home of the

asked by Shayn on October 8, 2006
72. Algebra 2

Is linear relationship a direct variation? why or why not? Assuming that the line is neither vertical or horizontal, it is a direct relationship. It indicates that one variable increases or decreases directly with changes in the other variable. A vertical

asked by Stephanie on December 27, 2006
73. Math

What is the median of Variable B? Scatter plot on a first quadrant coordinate grid. The horizontal axis is labeled Variable A. The vertical axis is labeled Variable B. Points are plotted at (two, two), (two, eight), (four, three), (five, one), (six,

asked by Marc-Anthony on January 19, 2016
74. Math

What is the median of Variable B? Scatter plot on a first quadrant coordinate grid. The horizontal axis is labeled Variable A. The vertical axis is labeled Variable B. Points are plotted at (two, two), (two, eight), (four, three), (five, one), (six,

asked by Marc-Anthony on January 19, 2016
75. Science

To determine the boing point of a liquid, a student heats 10 mL of the liquid in a test tube and records the temperature every minute for 20 minutes. In this example, time is the what? The choices are: Independent variable dependent variable hypothesis

asked by Jane on May 22, 2013
76. Science (2nd Try)

To determine the boing point of a liquid, a student heats 10 mL of the liquid in a test tube and records the temperature every minute for 20 minutes. In this example, time is the what? The choices are: Independent variable dependent variable hypothesis

asked by Jane on May 23, 2013
77. Determining whether expired air contains carbon dioxide

1.Formulate a hypothesis for this investigation 2.State the aim of this investigation 3. a)Independent variable b)Dependent variable c)Controlled variable 4.State methods and the control

asked by Michelle on August 23, 2015
78. psychology

The researcher's question of correlation between the cost of beer and the number of calories it contains? The researcher's question of correlation between the cost of beer and the volume of alcohol it contains?

asked by joyce on June 14, 2014
79. Statistics

A mathematics education researcher is studying where in high school mathematics texts it is most effective to insert questions. She wants to know whether it is better to present questions as motivation before the text passage, or after the passage. The

asked by AJ on January 28, 2007
80. biology need help

Which variable does the scientists or you deliberately change? Dependent, Independent, control is is independent Which variable does the scientists measure? Dependent, Independent, control is it dependent 6. Which variable remains the same/constant

asked by loli on October 18, 2013
81. biology

Which variable does the scientists or you deliberately change? Dependent, Independent, control is is independent Which variable does the scientists measure? Dependent, Independent, control is it dependent 6. Which variable remains the same/constant

asked by loli on October 18, 2013

MS. Sue here is exactly what the paper says- think back to the experiment you just designed to test the Best Wheels Bike Shop's new super titanium wheel bearings. Can you be sure that your results are due to the new bearings and not something else? That

asked by m on January 9, 2012
83. methods of research

4. Gerontologists interested in the effects of aging on reaction time have two groups of subjects take a test in which they must indicate as quickly as possible whether a probe word is a member of a previous set of words. One group of subjects is between

asked by Tameka on September 22, 2016
84. probability

A fair coin is flipped independently until the first Heads is observed. Let K be the number of Tails observed before the first Heads (note that K is a random variable). For k=0,1,2,…,K, let Xk be a continuous random variable that is uniform over the

asked by JuanPro on March 28, 2014
85. financial matters

Hello I was searching on variable cost, but i could not find nothing that defines How are variable costs handled? can someone one please explained to me how variable costs are handled? thanks a bunch:)

asked by kiki83 on January 30, 2011
86. math

A medical researcher believes that the standard deviation of the temperatures of newborn infants is greater than 0.6 degrees. A sample of 15 infants was found to have a standard deviation of 0.8 degrees. At the 0.10 level of significance, does the evidence

asked by Ina on October 5, 2014
87. Stat

1. For the following scores, X Y 1 6 4 1 1 4 1 3 3 1 Sketch a scatter plot and estimate the value of the Pearson correlation. b. Compute the Pearson correlation 2. For the following set of scores, X Y 6 4 3 1 5 0 6 7 4 2 6 4 a. Compute the Pearson

asked by Cole Brown on March 4, 2013

My son has this homework and I am all confused... the paper says to think back to the experiment you just designed to test the Best Wheels Bike Shop's new super titanium wheel bearings. He did not do this experiment which leads me to believe this is just a

asked by m on January 9, 2012
89. math

A researcher wanted to answer the following question: What is the difference in students' computer anxiety based on whether or not they own computers? The researcher surveyed 92 undergraduate education students via an online survey. In the survey, the

asked by kathy on June 24, 2012
90. math

N=9+x+y-z Where x,y,z are variable representation of some digit (0 to 9) Alok is like to maximize N while Bhanu Is like to minimize it towards this end ,Alok chooses a single digit number and bhanu substitute this for a variable of her choice (x,y or

asked by reenu on November 8, 2010
91. math

determine the resulting equation if one variable is solved in terms of the other variable in one equation and substitute this variable in the other equation. 1.) x=-y+7 x-y= -9 2.) y=2x 4x +3y=20 3.) y=2x +5 3x-2y=5

asked by Anonymous on November 18, 2014
92. math

determine the resulting equation if one variable is solved in terms of the other variable in one equation and substitute this variable in the other equation. 1.) 2x+5y=9 -x+y=2 2.) 3x+y=2 9x+2y=7 3.) x-y=-3 3x +y=19

asked by Anonymous on November 18, 2014
93. Science

In the experiment water clock : what changes (independent variable) , how does it responds to the changes made(dependent variable), and what is being controlled (controlled variable). Pleas I really need this by today. And also my question for science fair

asked by Daisy on January 19, 2015
94. psychology

if there is a positive correlation between the number of computers one possesses and the person’s heart health. what is a third variable (X) that may explain this correlation that is a cause of each one of the two variables. If X goes up the number of

asked by ashley on September 9, 2011
95. Chemistry

In the last part of this experiment, the temperature of tap water was recorded for fifteen minutes as the tap water was heated in a beaker. Identify the dependent and independent variable. (THE TEACHER Just said THE DEPENDENT AND INDEPENDENT VARIABLE but

asked by Sophia on September 2, 2015
96. math

N=x-y-z Where x,y,z are variable representation of some digit (0 to 9) Alok is like to maximize N while Bhanu Is like to minimize it towards this end ,Alok chooses a single digit number and bhanu substitute this for a variable of her choice (x,y or z)also

asked by Soumava on November 13, 2010
97. MATH URGENT!!!!

An investigator was interested in studying the effect of taking a course in child development on attitudes toward childrearing. At the end of the semester, the researcher distributed a questionnaire to students who had taken the child development course.

asked by Jill on November 21, 2011
98. Computer Science

Would like to know if this looks right Write a program that allows the user to input a total dollar amount for an online shopping order and computes and outputs the shipping cost based on the following schedule: Order Total Ship within USA Ship to Canada

asked by Legendirty on May 10, 2013
99. Sociology Multiple choice

Can anyone help me with these questions as I am stuck in these 1. The finding that the number of women reporting physical assaults by their husbands goes up on Super Bowl Sunday may lead to the erroneous conclusion that watching the Super Bowl causes

asked by Matt on June 12, 2008
100. Comm Tech

1.)what does it mean to say that two variables are negatively correlated A.)When one variable increases, the other decreases. B.)When variable increases, the other also C.)When one variable decreases, the other also decfreases D.)Both variables changes at

asked by YRN DJ on November 11, 2015