Author Question: If a student who wants to study the effect of stress on memory recruits participants by posting a ... (Read 72 times)

P68T · **on:** Jun 20, 2018

If a student who wants to study the effect of stress on memory recruits participants by posting a sign-up sheet for anyone willing to participate, the student is conducting

A) random selection.
B) haphazard selection.
C) specified selection.
D) quota selection.

Question 2

If the cell means of a factorial design study are graphed, and the pattern of bars in one section of the graph is different from the pattern in the other section, the pattern indicates that

A) marginal means should also be plotted.
B) there are more participants in one of the conditions.
C) there is an interaction effect.
D) a rounding error was made or the means were plotted improperly on the graph.