Identify the formula to calculate the Pearson correlation coefficient (r) when N represents the number of paired scores; XY is the sum of the product of the paired X and Y scores; X is the sum of the X scores; Y is the sum of the Y scores; X2 is the sum of the squared X scores; and Y2 is the sum of the squared Y scores.The magnitude of differences between the standard scores exactly parallels the differences between corresponding raw scores when a standard score is obtained by _____. Multiple choice question. linear transformation nonlinear transformation stretched transformation normalized transformation