Author Question: The technique used to find the relationship between curvilinear variables is called a. ... (Read 52 times)

sam.t96 · **on:** Jun 20, 2018

The technique used to find the relationship between curvilinear variables is called

a. correlation ratio. c. multiple correlation.
b. tetrachoric correlation. d. partial correlation.

Question 2

Identify the major threat to internal validity in the following research studies. A researcher conducted a semester-long experiment comparing two instructional programs in math. During the administration of tests during the semester, the researcher found that about ten percent of the experimental group and about five percent of the control group were absent for each administration.

a. Regression
b. Diffusion
c. Mortality
d. Selection
e. History