Author Question: In controlling internal sources of invalidity, true experimental designs control for a. all of the ... (Read 51 times)

a0266361136 · **on:** Jun 29, 2018

In controlling internal sources of invalidity, true experimental designs control for
a. all of the sources of internal invalidity
b. all of the sources of internal invalidity except selection bias and test unit mortality
c. selection bias, instrumentation, and interactive testing effects only
d. selection bias and test unit mortality only

Question 2

Find the median of the following scores: 1, 2, 3, 4, 5, 5, 7
a. 3.86
b. 4
c. 6
d. 27

Christopher · **Reply #1 on:** Jun 29, 2018

Answer to Question 1

A
One of the primary advantages of true experimental designs is they control for all of the internal sources of invalidity.

Answer to Question 2

B