# Correlation and Regression Assignment Help

Correlation and Regression Assignment Help
Correlation and Regression Assignment Help
Q: What is correlation and what does it do? …………………………………… 45
Q: When should correlation be used or not used? …………………………… 46
Q: What is the Pearson product-moment correlation coeffi cient? …….. 46
Q: What is the formula for calculating the correlation coeffi cient? ……. 47
Q: Briefl y, what are the other techniques for
calculating correlation? ………………………………………………………………. 47
Spearman Rank-Order Correlation ………………………………………………………………. 47
Phi Correlation ………………………………………………………………………………………….. 48
Point Biserial ……………………………………………………………………………………………. 48
Q: How would you use a graph to illustrate and interpret a
correlation coeffi cient? ………………………………………………………………. 48
Q: How is a correlation coeffi cient interpreted? ……………………………… 49
Q: What are the various issues with correlation? ……………………………. 50
■ CONTENTS
xi
Q: How would you calculate a correlation coeffi cient in Excel? ………… 50
Q: What is meant by the term “linear regression”? …………………………. 50
Q: What are the various assumptions that an analyst
takes into account while running a regression analysis? ………………… 51
Q: How would you execute regression on Excel? ……………………………. 51
Q: What is the multiple coeffi cient of determination or R-squared? ….. 51
Q: What is meant by “heteroscedasticity”? ……………………………………. 52
Q: How do you differentiate between conditional and unconditional
heteroscedasticity? ……………………………………………………………………. 52
Q: What are the different methods of detecting heteroscedasticity? …. 52
Q: What are the different methods to correct heteroscedasticity? …….. 53
Q: What is meant by the term “serial correlation”? …………………………. 53
Q: What are the different methods to detect serial correlation? ……….. 54
Q: What are the different methods to correct multicollinearity? ……….. 54
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