In controlling internal sources of invalidity, true experimental ...

[a0266361136]

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]

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

[a0266361136]

Excellent

[xiaomengxian]

Great answer, keep it coming