192 may ! )
the headings of each column. defins..
mayan/incan
14. king ahuitzoti (1486-1502) ruled during the golden age of the aztecs. he constructed
"superhighways" and had runners pass messages from one end of the empire to the other. a
message could travel
miles in just
hours.

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.