Mat

4.
w′x′y′z′ is a dilation image of wxyz. which is the correct description of the dilation?

a) an enlargement with scale factor 2

b) a reduction with scale factor 1/2

c) a reduction with scale factor 2

d) an enlargement with scale factor 1/2

17. a researcher measures three variables, x, y, and z for each individual in a sample of n = 20. the pearson correlations for this sample are rxy = 0.6, rxz = 0.4, and ryz = 0.7. a. find the partial correlation between x and y, holding z constant. b. find the partial correlation between x and z, holding y constant. (hint: simply switch the labels for the variables y and z to correspond with the labels in the equation.) gravetter, frederick j. statistics for the behavioral sciences (p. 526). cengage learning. kindle edition.