Stats 2: Regression, Correlation and Hypothesis Testing

Question 1

If y = axⁿ for constants a and then logy = ?

Answer 1

• log y = loga + nlogx

Question 2

If y = kb^x for constants k and b then log y =

Answer 2

• log y = log k + x log b

Question 3

What is the product moment correlation coefficient?

Answer 3

• the PMCC describes the linear correlation between two variables
• it can take values between -1 and 1

Question 4

For one-tailed test use:

Answer 4

Question 5

For a two-tailed test use:

Answer 5