
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 
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 
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 
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 
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 
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 
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 
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 
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 
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 
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 
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 
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 
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 
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 
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 
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 
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 
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 
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 
stats ?
A researcher investgating depression devises a study that contains the independent variable "Treatment," manipulated betweenparticipants. Participants may experience "psychodynamic therapy," "cognitive behavioral therapy," "medication," or "waiting list
asked by ash on March 2, 2009 
stats
A researcher investgating depression devises a study that contains the independent variable "Treatment," manipulated betweenparticipants. Participants may experience "psychodynamic therapy," "cognitive behavioral therapy," "medication," or "waiting list
asked by ash on March 1, 2009 
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 
Accounting
An investor who is a nonresident 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 
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 
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 
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 
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 
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 
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 
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 
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 
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 
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 
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 
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 
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 
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 
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 
science
what is a control ,variable, independent variable, experimental variabale, dependent variable
asked by hannah on September 11, 2007 
8th grade
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 
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 
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 
MATH help
Which of the following statements is true? A . The dependent variable is represented on the xaxis. 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 
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 
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 
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 
Math help
Elizabeth bought 3inch 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 
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 
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 
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 
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 
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 
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 
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 
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 
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 
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 xaxis only I only ii both I and ii neither I or ii
asked by helen on January 14, 2014 
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 yaxis only i only ii both i and ii neither
asked by helen on January 14, 2014 
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 
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 
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 
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 
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 
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 
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 
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? cWhat is random assignment? dWhy is random
asked by deb on October 3, 2011 
MATH
D. Sam and Pete have a job dogsitting 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 
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 
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 
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 
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 
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 MarcAnthony on January 19, 2016 
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 MarcAnthony on January 19, 2016 
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 
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 
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 
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 
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 
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 
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 
6th grade mathms. sue
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 
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 
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 
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 
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 
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 
6th grade math
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 
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 
math
N=9+x+yz 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 
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 xy= 9 2.) y=2x 4x +3y=20 3.) y=2x +5 3x2y=5
asked by Anonymous on November 18, 2014 
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.) xy=3 3x +y=19
asked by Anonymous on November 18, 2014 
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 
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 
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 
math
N=xyz 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 
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 
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 
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 
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