The procedure that experimenters need to use to make sure that participants in both the treatment and control groups are not aware of the purpose of the experiment is known as the __________
a) independent variable
b) dependent variable
c) random assignment
d) statistical law
Answer: c
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If any reasonable person would expect that with 4 trials the last trial is almost certain to be significantly different from the first, then Fisher's LSD test
a. has more protection against a high familywise error rate. b. has a smaller degree of protection against a high familywise error rate. c. will lead to a very high familywise error rate. d. Error rates have nothing to do with the issue.
Marina has a vocabulary of over 300 words and uses two-word phrases. She likes to talk and clearly enjoys participating in social talk. About how old is Marina?
a. 12 months b. 18 months c. 24 months d. 36 months
There are ten students in the pre-kindergarten class. Each student is shown eight colors and asked to name them. The number of colors correctly named by each student was: 8, 8, 8, 8, 7, 7, 6, 6, 5, 4 . What would be the mean?
a. 4.0 b. 5.7 c. 6.7 d. 8.0
Which of the following type of visual receptor is found everywhere in the retina except the fovea?
a. amacrine cells b. rods c. ganglion cells d. cones