Thursday

May 28, 2015

May 28, 2015

Number of results: 10,123

**statistics**

Given the following scatter diagram , the sample correlation coefficient r: Has a positive linear correlation Has a negative linear correlation. Has little or no correlation. Looks close to + 1.00
*August 19, 2010 by Karen*

**Statistics**

Suppose the correlation between two variables is -0.57. If each of the y-values is multiplied by -1, which of the following is true about the new scatterplot? It slopes up to the right, and the correlation is -0.57 It slopes up to the right, and the correlation is +0.57 It ...
*November 8, 2012 by John*

**statistics**

Suppose the correlation between two variables is -0.57. If each of the y-values is multiplied by -1, which of the following is true about the new scatterplot? It slopes up to the right, and the correlation is -0.57 It slopes up to the right, and the correlation is +0.57 It ...
*November 14, 2012 by joey*

**statistics**

Suppose the correlation between two variables is -0.57. If each of the y-values is multiplied by -1, which of the following is true about the new scatterplot? It slopes up to the right, and the correlation is -0.57 It slopes up to the right, and the correlation is +0.57 It ...
*November 15, 2012 by joey*

**Statistics**

Suppose the correlation between two variables is -0.57. If each of the y-values is multiplied by -1, which of the following is true about the new scatterplot? It slopes up to the right, and the correlation is -0.57 It slopes up to the right, and the correlation is +0.57 It ...
*November 16, 2012 by John*

**Statistics**

Suppose the correlation between two variables is -0.57. If each of the y-values is multiplied by -1, which of the following is true about the new scatterplot? It slopes up to the right, and the correlation is -0.57 It slopes up to the right, and the correlation is +0.57 It ...
*November 18, 2012 by John*

**Statistics**

Suppose the correlation between two variables is -0.57. If each of the y-values is multiplied by -1, which of the following is true about the new scatterplot? It slopes up to the right, and the correlation is -0.57 It slopes up to the right, and the correlation is +0.57 It ...
*December 17, 2012 by Jill*

**Statistics**

Suppose the correlation between two variables is -0.57. If each of the y-values is multiplied by -1, which of the following is true about the new scatterplot? It slopes up to the right, and the correlation is -0.57 It slopes up to the right, and the correlation is +0.57 It ...
*December 18, 2012 by Jill*

**Statistics**

How would you interpret the findings of a correlation study that reported a linear correlation coefficient of +0.3?
*July 4, 2012 by Jane*

**Statistics**

How would you interpret the findings of a correlation study that reported a linear correlation coefficient of − 1.34?
*October 11, 2011 by robyn*

**Statistics **

For the following set of scores: X Y 6 4 3 1 5 0 6 7 4 2 6 4 a) Compute the Pearson correlation. b) Add 2 points to each X value and compute the correlation for the modified scores. How does adding a constant to every score affect the value of the correlation? c)Multiply each ...
*April 24, 2014 by Mary*

**Statistics**

How would you interpret the findings of a correlation study that reported a linear correlation of +0.3? I believe they have nothing in common because they are close to one. Please advise
*June 10, 2014 by Chevelle DuBois*

**Algebra**

2. Find the value of x^3 +2x^2 -3 when x =3 Answer-42 12. What type of correlation would you expect between the number of minutes a candle burns and the height of the candle? a. no correlation b. positive correlation c. negative correlation d. equal correlation Answer-c 13. ...
*August 7, 2011 by lizzie*

**Correlations**

Which type of correlation would you expect to see between the distance traveled and the time it takes to travel that distance? A. positive correlation B. negative correlation C. no correlation idk why this question is confusing me, but it is
*November 11, 2013 by hermes*

**algebra**

Which type of correlation would you expect to see between the distance traveled and the time it takes to travel that distance? A. positive correlation B. negative correlation C. no correlation idk why this question is confusing me, but it is
*November 12, 2013 by hermes*

**statistics in psychology**

11. Make up a scatter diagram with 10 dots for each of the following situations: (a) perfect positive linear correlation, (b) large but not perfect positive linear correlation, (c) small positive linear correlation, (d) large but not perfect negative linear correlation, (e) no...
*July 25, 2011 by desiree*

**statistics**

calculate both the pearson and spearman correlation coefficient for the data below. state whether ther are significant? writ a brief statement to explain the results generated by each correlation. self-esteem 10.00, 9.00,8.00,7.00,7.00,6.00,6.00,6.00,4.0,4.00. grades 83.00,97....
*April 24, 2011 by ryee*

**statistics**

Tasha examined the correlation between the weight and fuel economy of the 20 top-selling cars. She observed that the coefficient of determination was 62.3%. For this data, the value of the correlation coefficient, r, is __________.
*October 25, 2014 by Casey*

**Economics**

Please correct if I have stated the right correlation to the following relationships: a) volume of auto traffic and auto accident rate -> 0 correlation b) pesticide and crop yield -> negative correlation c) consumption and GDP -> positive correlation
*January 25, 2011 by Anonymous*

**Psychology Statistics**

2 For a sample of n = 20 individuals, how large a Pearson correlation is necessary to be statistically significant for a two-tailed test with = .05? 3 The Pearson correlation is calculated for a sample of n = 25 individuals. What value of df should be used to ...
*April 26, 2013 by Chioma*

**statistics**

A professor is interested in knowing the correlation, if any, of students’ scores on the first and second exams given in his class. Test 1 Test 2 92 86 90 87 89 85 82 90 88 79 92 90 100 92 91 84 Is there a significant correlation? Explain its statistical significance, if any.
*February 12, 2012 by John*

**math**

I need a definition for this constant rate of change when graphing in mathematics and for Positive and Negative correlation and also what the pattern is in this a) 1000, 100, 10, 1 I'll give you a definition for positive and negative correlation. Correlation is a linear ...
*January 10, 2007 by austin*

**statistics**

how do I find the correlation coefficient r? Jesse put the heartbeat and lifespan data into a statistical software program and found the coefficient of determination is 0.45. The value of the correlation coefficient is __________.
*October 25, 2014 by Casey*

**statistics**

A government researcher wants to conduct a study to determine if there is a correlation between social security numbers and income. He collects the paired data from a random sample of 100 people. Should the methods of this chapter be used with the linear correlation ...
*July 22, 2013 by ky*

**Statistics**

1.What is the p value (“significance level”)? What does this p value mean? 2.How does the n (sample size) of this sample affect the r and p values? 3.Is there a relationship between assertiveness and whether one holds anger “in”? Descriptive Statistics Mean Std. Deviation N ...
*June 16, 2010 by Donald*

**Statistics!!!**

b. The correlation between the number correct on a math test and the time it takes to complete the test is -.45. Test whether this correlation is significant for 80 children at the .05 level of significance. Choose either a one-or two-tailed test and justify your choice.
*July 8, 2013 by Ethel*

**Math-Algebra II**

How would you interpret the findings of a correlation study that reported a linear correlation coefficient of − 1.34? The only thing I know is that it represents a negative correlation. Please shed any light you can.
*January 26, 2011 by Michelle*

**college statistics**

if the correlation co-efficient is o.32 what is the sign of the slope regression line as the correlation co efficient decreases from 0.78 to 0.71 do the oints of the scatter plot move toward the regression line or away from it
*May 26, 2012 by melba*

**statistics**

If the correlation coefficient is -0.54, what is the sign of the slope of the regression line? - As the correlation coefficient decreases from 0.86 to 0.81, do the points of the scatter plot move toward the regression line, or away from it
*October 4, 2012 by mom*

**math**

interpret an r value of -0.82. a)strong negative correlation B)weak negative correlation C)strong positive correlation D)no correlation
*November 13, 2009 by princess*

**Statistics**

foofy computes the correlation between an individual's physical strength and his or her college grade poing average. Using a computer, the correlation for a sample of 2000 people is r(1998)=+.08, p=<.0001. she claims this is a useful tool for predicting which college ...
*July 10, 2011 by K*

**statistics**

For problems 12 to 14, do the following: (a) Make a scatter diagram of the scores; (b) describe in words the general pattern of correlation, if any; (c) figure the correlation coefficient; (d) figure whether the correlation is statistically significant (use the .05 ...
*January 8, 2011 by kamelia *

**statistics**

For problems 12 to 14, do the following: (a) Make a scatter diagram of the scores; (b) describe in words the general pattern of correlation, if any; (c) figure the correlation coefficient; (d) figure whether the correlation is statistically significant (use the .05 ...
*January 8, 2011 by kamelia *

**Statistics**

Why do we need to distinguish between strong and weak correlation of data sets using best-fit lines? When a correlation has been established between the two data sets, how is it linked to causality? Please provide examples to support your answer.
*June 1, 2010 by immanuel*

**math**

Construct a scatter plot for the given data. Determine whether there is a positive linear correlation, negative linear correlation, or no linear correlation.
*December 6, 2009 by jen*

**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?
*February 10, 2014 by Annie*

**social studies**

Although the Chesapeake and New England colonies differed in many ways, relations with Native Americans followed a similar course in both regions. Why? What were the biggest factors in relations between the two sides? Did relations change over time and why?
*September 10, 2011 by Tim*

**Math**

Jade counted the number of the students on each sports time at her school and the number of wins the team had last season. If she displays her data on a scatter plot, what type of relationship will she most likely see between the number of students on a team and the number of ...
*October 18, 2011 by Please help*

**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?
*May 29, 2014 by tiph*

**statistics**

The data below are the final exam scores of 10 randomly selected statistics students and the number of hours they studied for the exam. Calculate the correlation coefficient r.
*September 28, 2011 by milly*

**statistics**

Do you think there is a correlation between CEO salaries and the degree of success of a company? If you were to take a sample of companies with comparable size, market capitalization, and product category, and plot CEO salaries against the net profit of their respective ...
*December 17, 2011 by Mark*

**Statistics**

In a study on caffeine and stress, college students indicated how many cups of coffee they drink per day and their current stress level on a scale of 1 to 10. The table shows the survey results. Using a web-calculator, obtain the appropriate correlation coefficients. Number of...
*February 5, 2011 by SHelia*

**statistics**

Research reports a correlation of +0.8 between math achievement and math aptitude it also reports a correlation of -0.8 between math achievement and a math anxiety. Which interpretations is most c?orrect
*September 5, 2012 by Gee*

**statistics**

find the value for the correlation coefficient r. x 5 1 4 2 3 y 5 10 12 4 8
*April 29, 2009 by yorkie16*

**statistics**

What does it mean when we say, "Correlation is not a causality?"
*August 9, 2009 by Bulldog*

**Statistics**

Calculate according Permutation and Correlation: 8 8 7 6 8 7 6 5 P P P P C C C C 3 4 6 1 3 5 2 0
*April 9, 2011 by Pavlos Cs*

**Statistics**

The value of the correlation coefficient can be between 0 and 1.
*May 17, 2011 by Matt*

**statistics**

The value of the correlation coeficient can be between 0 and 1.
*May 19, 2011 by jessica*

**statistics**

. A professor is interested in knowing the correlation, if any, of students’ scores on the first and second exams given in his class. Test 1 Test 2 92 86 90 87 89 85 82 90 88 79 92 90 100 92 91 84 Is there a significant correlation? Explain its statistical significance, if any...
*February 12, 2012 by John*

**statistics**

Select the best interpretation of the correlation coefficient r = 0.
*May 19, 2011 by Eric *

**Statistics**

Select the best interpretation of the correlation coefficient r = -.87
*May 21, 2011 by Scott*

**Statistics**

If the correlation coefficient is 0.790, what is the explained variation? A. 37.6% B. 62.4% C. 79% D. 21%
*December 11, 2011 by Ashleigh*

**Statistics**

The value of the correlation coefficient can be between 0 and 1.True or false?
*November 7, 2012 by jassi*

**statistics **

Does a correlation ever prove causation? (For any subject/field?)
*March 17, 2015 by Anonymous*

**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). Explain your media ...
*November 16, 2011 by ashley*

**STATISTICS**

A) If a regression experiment has correlation coefficient r= 0.75, what precent of total variation is explained by the regression? B) if 85% of total variation is explained by the regression, and there is an inverse relationship between y and x, then what is the correlation ...
*April 17, 2011 by SROBSON*

**discrete math ..please help**

. Let A = {1,2,3,4}. Prove the statements (a) and (b). You must describe the relations on A as a subset of AxA and also draw their arrow diagrams. (a) There exists a relation R on A so that R is refexive, symmetric but not transitive. (b) There exists a relation S on A so that...
*August 12, 2014 by Dosari*

**math..please help**

Let A = {1,2,3,4}. Prove the statements (a) and (b). You must describe the relations on A as a subset of AxA and also draw their arrow diagrams. (a) There exists a relation R on A so that R is refexive, symmetric but not transitive. (b) There exists a relation S on A so that S...
*August 13, 2014 by Dosar*

**Math Statistics**

True or false? The value of the correlation coefficient can be between 0 and 1.
*May 19, 2011 by Bill*

**Statistics**

Calculate the Pearson product-moment correlation for the data below. X 3 4 2 1 Y 5 5 3 4
*August 28, 2012 by StudentD*

**statistics**

A correlation of 0 always means there is no relationship between x and y true or false?
*September 18, 2012 by Gee*

**STATISTICS**

Which of the following correlation coefficients is higher? a. -0.68 b. 0.60 c. 0.68 d. a and c e. None of the above a and c right?
*August 30, 2013 by Susie*

**Statistics**

Using a scatter diagram with x(age in weeks) of calves and y (weight in kg) and the info is as follows Week 1 /42kgs Week 3 /50 kgs Week 10/75 kgs Week 16/100kgs Week 26/150kgs week 36/200kgs would you estimate the linear correlation coefficient R to be positive , close to ...
*October 12, 2014 by Gretchen*

**Statistics**

13.19 (a) Generate a correlation matrix for your predictors. Round the results to three decimal places. (b) Based on the correlation matrix, is collinearity a problem? What rules of thumb (if any) are you using? Correlation Matrix F O E A F Floor 1.000 Offices .823 1.000 ...
*October 4, 2010 by Pat*

**statistics**

One of nature's patterns connects the percent of adult birds in a colony that return from the previous year and the number of new adults that join the colony. Following are data for 13 colonies of sparrowhawks: Percent return 73 61 79 54 75 62 53 46 57 50 62 45 35 New adults 4...
*January 11, 2015 by Les*

**STATISTICS**

True or False? A researcher is interested in studying whether there is a correlation of IQ with health. For this purpose he selected a sample of 261 people and asked them to complete two questionnaires: one for IQ and one for health. After evaluating the questionnaires each ...
*September 6, 2013 by Marian*

**statistic**

Explain the concept of correlation and how to interpret correlation coefficients of 0.3,0, and -0.95
*August 7, 2011 by Toha*

**Finance**

Use the following information to calculate the covariance of asset A with an equally weighted portfolio of assets B and C. Asset Standard Deviation A 20% B 30% C 40% The correlation coefficient between A and B is 0.6. The correlation coefficient between A and C is 0.5. The ...
*September 22, 2014 by Anonymous*

**Statistics**

Make a scatter diagram with 10 dots showing a perfect positive linear correlation
*July 15, 2009 by Anonymous*

**Math-Statistics**

draw scatterplots one for which the pearson correlation coefficient is r=-1 and r=1 Stuck on how to get started
*October 3, 2010 by noell*

**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 information, the strength of the...
*October 3, 2011 by deb*

**Stats**

The linear correlation coefficient is a numerical value that ranges from -1.00 to +1.00. Describe in a sentence or two the meaning of each of these correlation coefficients: a) -1.00 b) +1.00
*October 20, 2011 by Jennifer*

**STAT**

Calculate SP (the sum of products of deviations) for the following scores. Note: Both means are decimal values, so the computational formula works well. X Y 0 2 0 1 1 0 2 1 1 2 0 3 Assume a two-tailed test with .05. (Note: The table does not list all the possible df values...
*March 3, 2013 by Tracy*

**Statistics**

A student wonders if tall women tend to date taller men than do short women. She measures herself, her dormitory roommate, and the women in the adjoining rooms; then she measures the next man each woman dates. Here are the data (heights in inches): Men (x) 67 62.1 66.9 63.3 72...
*September 6, 2011 by gandakho*

**statistic**

what type of correlation would you expect to exist between people's height and their shoe size? My answer is a positive correlation.
*July 12, 2012 by bria*

**Statistics**

Suppose a study found a correlation coefficient r = -0.61 between the gender of a worker and their income. What can you conclude?
*January 4, 2011 by Lisa*

**Statistics**

True or False: If the value of the correlation, r, is zero then there is no association between the two quantative variables.
*December 1, 2011 by Jay*

**statistics**

For certain x and y series which are correlated, the two lines of regression are 5x-6y+9=0 , 15x-8y+130=0. The correlation coefficient is :
*May 19, 2013 by anand nanda*

**Bus**

Please help! Which is not a component of basic public relations practice? counseling employee relations fund-raising networking
*September 8, 2014 by Jay*

**Statistics**

A quiz consists of 10 multiple choice questions. Each question is marked either “right” or “wrong.” Each right answer gets 5 points, and 1 point is taken off for each wrong answer. The correlation between the number of right answers and the number of wrong answers is.... The ...
*March 15, 2013 by Emily*

**statistics**

Please Help! My book and instructor are no help. Please help me understand why I need to make a scatter diagram, when dealing with bivariate data, and how to find SS(x), SS(y), SS(xy), and r. I have all the formulas, but don't understand. Thanks! I dont know that the diagram ...
*August 30, 2005 by Rebecca*

**statistics**

I am trying to figure out how the answer of 0.989 came from the following equation of correlation. 7(-5)-(25)(13) _______________________ /7(127)-(25)*/x/7(71)-(13)*
*January 23, 2015 by Lucy*

**american history**

Was it Ivy Lee or Henry Ford that pioneered the field of corporate public relations? Ive read that Ivy is considered one of the founding fathers of the public relations but then I also read that Henry was the first major industrialist to use the public relations concepts!
*September 27, 2012 by Shawna*

**STOR**

Each of the following statements contain a blunder. Explain in each case what is wrong. a) There is a high correlation between the age of American workers and their occupation. b) we found a high correlation (r=1.19) between students rating of faculty teaching and ratings made...
*September 6, 2012 by ami*

**statistics**

What particular measure of correlation would be most appropriate for use with two variables measured at an ordinal level?
*August 30, 2012 by Pat*

**Statistics**

The linear correlation coefficient, r, is a numerical measure of the strength of the relationship between two variables representing quantitative data.
*May 17, 2011 by EJ*

**Statistics Help Please**

A sample of eight observations of variables x and y is shown below: x 5 3 7 9 2 4 6 8 y 20 23 15 11 27 21 17 14 Find the value of coefficient of correlation, r. a) - 0.991 b)0.872 c)- 0.512 d)0.942
*March 29, 2009 by Stuart*

**Statistics!!!**

c. The correlation between number of friends and grade point average (GPA) for 50 adolescents is .37. Is this significant at the .05 level for a two-tailed test?
*July 8, 2013 by Ethel*

**Discrete Math**

Which of these relations on {0, 1, 2, 3} are equivalence relations? Justify the relation(s) that are not equivalent. R1: {(0,0), (1,1), (2,2), (3,3)} R2: {(0,0), (1,1), (1,3), (2,2), (2,3), (3,1), (3,2), (3,3)} R3: {(0,0), (0,1), (0,2), (1,0), (1,1), (1,2), (2,0), (2,2), (3,3...
*February 8, 2011 by Laurey *

**statistics**

In baseball, is there a linear correlation between batting average and home run percentage? Let x represent the batting average of a professional baseball player. Let y represent the home run percentage (number of home runs per 100 times at bat). Suppose a random sample of ...
*December 19, 2010 by stephanie*

**Statistics**

True or false? The linear correlation coefficient, r, is a numerical measure of the strength of the relationship between two variables representing quantitative data.
*May 19, 2011 by Bill*

**Statistics**

Calculate a linear regression, the residuals, and the correlation between two variables using the following info: number of people:12,14,15,18,20,16,14,13,18,19,20,22 and cost of drinks:24,30,36,38,65,44,36,30,39,76,80,85
*May 30, 2013 by Kathryn*

**STATS**

X 3, 5, 6, 8, 9, 10, 12, 14, 15 Y 30,33,34,36,37,40, 50, 60, 70 Calculate Linear Correlation Coefficient r Use significance level 0.05 and Appendix Table A-6 to make decision about linear correlation between x and y.
*March 30, 2010 by Mary*

**statistics**

Assuming that the correlation between IQ scores and GPA scores is +.87, explain what this means.
*July 25, 2011 by redd*

**Statistics**

As the sample size gets larger, what happens to the size of the correlation that is needed for significance?
*May 2, 2014 by Lizzy*

**Psy 285**

Ice cream melths when heated is this causation or correlation? Money is the rot of all evil is this causation or correlation? Please help have no clue:(
*December 8, 2008 by Julissa*

**Statistics 15.59**

Computer database GROWCO describes the characterisitics of 100 companies identified by Fortune as the fastest growing. Two of the variables listed are revenue and net income (millions of dollars) for the most recent four quarters. Determine the linear regression equation ...
*June 16, 2010 by Julia Brown*

**Statistics**

how do you find equation of the least-squared line (line of best fit) from 2-vars stats and the correlation?
*October 29, 2009 by Bob*

**us history **

((AN ERA OF LIMITS 1969-1980)) How were the relations between the United States and the Soviet Union different during this era? How were the relations the same?
*June 22, 2011 by K*

**Business Statistics**

Given the least squares regression line = -2.88 + 1.77x, and a coefficient of determination of 0.81, the coefficient of correlation is: A) -0.88 B) +0.88 C) +0.90 D) –0.90 I picked C +0.90
*March 15, 2009 by Stuart*