Random sampling deals with what aspect of a study? a. Who the ...

[humphriesbr@me.com]

Random sampling deals with what aspect of a study?
 a. Who the results can be applied to.
  b. Whether or not a cause and effect relationship exists.
  c. What the actual statistical results are.
  d. What research question is being asked.

Question 2

Suppose you come across an experiment in which random assignment was not used. To what extent will the conclusions of the experiment be affected?

[bdobbins]

Answer to Question 1

A

Answer to Question 2

IT DEPENDS ON THE EXTENT TO WHICH YOU THINK THE DIFFERENCES IN THE GROUPS (DUE TO NOT USING RANDOM ASSIGNMENT) MAY EXPLAIN ANY OF THE OBSERVED RELATIONSHIPS. THIS CAN BE SERIOUS ENOUGH TO NEGATE THE CONCLUSIONS ALTOGETHER.