Grant attempted to solve an equation but made an error. What is his error, and which
step did he make it in?
-4 + 2x = 5 - (x – 3) + 3x
+ 2x = 5 - x + 3 + 3x
-4 + 2x = 5 + 4x + 3
- 4 + 2x = 8 + 4x
Step 1
Step 2
Step 3

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.