Which of the following actions would have the effect of either changing the size or direction (sign) of a Pearson r value pertaining to a set of X and Y scores?   a. adding a constant value to each X and Y score   b. subtracting a constant value from each X and Y score   c. multiplying each X and Y score by a negative constant value   d. dividing each X and Y score by a positive constant value

MATLAB: An Introduction with Applications
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Author:Amos Gilat
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Chapter1: Starting With Matlab
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Which of the following actions would have the effect of either changing the size or direction (sign) of a Pearson r value pertaining to a set of X and Y scores?
  a.
adding a constant value to each X and Y score
  b.
subtracting a constant value from each X and Y score
  c.
multiplying each X and Y score by a negative constant value
  d.
dividing each X and Y score by a positive constant value
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