Explore BrainMass

Explore BrainMass

    MCQs: Correlation and Regression

    Not what you're looking for? Search our solutions OR ask your own Custom question.

    This content was COPIED from BrainMass.com - View the original, and get the already-completed solution here!

    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.

    © BrainMass Inc. brainmass.com March 4, 2021, 10:43 pm ad1c9bdddf
    https://brainmass.com/statistics/regression-analysis/mcqs-correlation-and-regression-355572

    Attachments

    Solution Summary

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

    $2.49

    ADVERTISEMENT