In an experiment, the purpose for manipulating the independent ...

[mia]

In an experiment, the purpose for manipulating the independent variable is to help ____.
 
  a. establish the direction of the relationship by showing that the dependent variable changes when you manipulate the independent variable
  b. eliminate the third variable problem because you decide when to manipulate rather than waiting for the variable to change
  c. establish the direction of the relationship and help eliminate the third variable problem
 d. ensure that any effects of selection bias or other randomization failures are minimized

Question 2

Any sampling method in which sampling continues until a specific number of sampled units for each subgroup of a population have been included is called a(n) ____ sample.
 
  a. quota
 b. snowball
 c. heterogeneity
  d. expert

[joanwhite]

Answer to Question 1

c

Answer to Question 2

a