The critical value for r depends on _____. a. alpha c. both a ...

[pepyto]

The critical value for r depends on _____.
 
  a. alpha c. both a and b
  b. degrees of freedom d. none of these

Question 2

When conducting a hand calculation of the Pearson product moment correlation coefficient, how many columns of numbers are needed?
 
  a. two c. four
  b. three d. five

[laurnthompson]

Answer to Question 1

C
The table is organized by alpha levels and degrees of freedom.

Answer to Question 2

D
The columns are needed for the X scores, the Y scores, the squared X scores, the squared Y scores, and the XY scores.