The participant in an experiment has the right to
a. withdraw at any time.
b. withdraw only prior to the start of the experiment.
c. withdraw only if the experimenter agrees.
d. withdraw at any time only in certain types of experiments.
Chi-square is calculated by summing the (_____ - _____)2 divided by _____.
a. observed; expected; observed
b. expected; observed; observed
c. observed; expected; expected
d. observed; observed; expected
If a between-subjects experiment produces 50 scores in treatment 1 and 50 scores in treatment 2, then the experiment must have employed ____.
a. 25 participants
b. 50 participants
c. 100 participants
d. 200 participants
The formula X = T + E best describes ____.
a. item response theory
b. true score theory
c. the Rasch model
d. generalizability theory
In order to have an experiment, it is necessary to have at least two levels of the dependent variable.
Indicate whether the statement is true or false
Chi-square tests are to _____ data as Wilcoxon tests are to _____ data.
a. ordinal; interval
b. nominal; ordinal
c. ordinal; nominal
d. ratio, ordinal
A between-subjects experiment comparing four treatment conditions produces 20 scores in each treatment condition. How many individuals participated in the entire experiment?
a. 1
b. 4
c. 20
d. 80
One of the measures Rosalyn is including in her study of the effects of environmental enrichment is the score on a standardized scale of intelligence. This is best described as a(n) ____ scale.
a. nominal
b. ordinal
c. interval
d. ratio
The effect of boredom or fatigue with a task are termed general practice effects.
Indicate whether the statement is true or false
Which of the following is not an assumption of the 2 goodness-of-fit test?
a. It is a nonparametric test.
b. It is appropriate only for ordinal data.
c. The frequency in each cell should be at least 5.
d. The sample should be randomly selected.
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