# MCQs: Correlation and Regression

Please see attached and calculate summary output to answer the following questions:

1/ If the correlation between 2 variables is -.77 which is true.

a/ There is a fairly strong negative linear relationship

b/ An increase in one variable will cause the other variable to decline by 77%

2/Calculate the correlation coefficient between rain on Friday and rain on Saturday variables. which statement is true?

a/ Chance of rain on Saturday is 80%

b/ Correlation coefficient is 21%

c/ Correlation is not statistically significant at 5%level

3/ in order to develop a regression model to predict Saturday attendance

a/ It is impossible to distinguish dependent and independent variables

b/ Friday attendance is independent and Saturday is dependent

c/ Both Friday and Saturday are dependent variables

d/ Both Friday and Saturday attendance is independent variables.

4/ Which is the correct interpretation of the regression slope coefficient for Friday attendance

a/ When attendance increase by 100 average Saturday attendance increase151

b/ When Friday attendance increase by 100 average Saturday attendance increase12.39

c/ When Friday attendance increase by 100 average Saturday attendance increase1513

d/ When Friday attendance increase by 100 average Saturday attendance increase15.13

e/ When Friday attendance increase by 100 average Saturday attendance increase1.51

5/ Which of the following is true

a/ The effect of Friday attendance and Saturday rain variables are statistically significant at 5% level.

b/ All the independent variables are statistically significant at 5% level

c/ The effect of Friday attendance variables is statistically significant at 5% level

d/ None of the independent variables are statistically significant at 5% level

e/ The effect of Friday attendance and the interaction variables are statistically significant at 5% level.

6/ If Friday attendance is 18,394 and is expected to rain on Saturday, the predicted Saturday attendance is approx.

a/ 14700

b/ 40300

c/ 17900

d/ 29100

e/19700.

Please show your calculations.

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#### Solution Summary

The solution provides answers to multiple choice questions on correlation and regression. Relevant excel workings are also included.