What is the formula for the Pearson correlation coefficient?
A) $\frac { \sum \left[ \left( X - M _ { X } \right) \left( Y - M _ { Y } \right) \right] } { \sqrt { \left( S S _ { X } \right) \left( S S _ { Y } \right) } }$
B) $\frac { \sum \left[ \left( X - M _ { X } \right) \left( Y - M _ { Y } \right) \right] } { \sqrt { \left( S D _ { X } \right) \left( S D _ { Y } \right) } }$
C) $\frac { \sum \left[ \left( X - M _ { X } \right) \left( Y - M _ { Y } \right) \right] } { \left( S S _ { X } \right) \left( S S _ { Y } \right) }$
D) $\sum \left[ \left( X - M _ { X } \right) \left( Y - M _ { Y } \right) \right]$

Question

Quizplus · Accepted Answer

The Pearson correlation coefficient formula is correctly represented in option A, where it is the sum of the product of the deviations of X and Y from their respective means, divided by the product of the standard deviations of X and Y, which is essentially the square root of the sum of squares (SS) of X and Y.

What Is the Formula for the Pearson Correlation Coefficient? A)

What Is the Formula for the Pearson Correlation Coefficient?
A)