A psychology professor is conducting an experiment in which ...

[dmcintosh]

A psychology professor is conducting an experiment in which subjects perform memory tasks. There are four groups, each participating in different buildings on campus. During the time of the experiment one group was in a building near a dumpster that was being emptied by a big, noisy trash truck. The other groups weren't close enough to hear the noise. Which type of error does this introduce into the research?
 a. systematic error
  b. sampling error
  c. testing error
  d. interference error

Question 2

In terms of ratings, which movies have the highest heterogeneity?
 a. Action and Animation c. Family and Classic
  b. Animation and Art d. Art and Horror

[Sarahjh]

Answer to Question 1

A

Answer to Question 2

D
The standard deviation for the ratings is highest for Art (0.809) and Horror (0.905).

[dmcintosh]

Great answer, keep it coming

[xiazhe]

Thanks for the timely response, appreciate it