Which pairs of expressions are equivalent? Mark all that apply. А
14 - 9 and 14 + (-9)
B
18 - 6 and -18 + 6
С
-7 - 22 and 22 - (-7)
D 3 - 30 and 3 + (-30)
E
10 - 5 and -5 - 10
F
-23 - 4 and -23 + (-4)

In a graph with several intervals o data how does a constant interval appear? what type of scenario produces a constant interval?

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.

1yd 1 ft = 1 1/12 1 1/3 1 1/2 1 1/6