If you compared the number of cars owned by families in America vs. Spain, what type of graph would best illustrate these data?
a. one simple frequency graph, with f on the Y-axis
b. two simple frequency graphs, with f on each Y-axis
c. a bar graph, with mean number of cars on the Y-axis
d. a line graph, with mean number of cars on the Y-axis
Question 2A study which compares the growth in the number of PTA mothers to the
number of small business failures would be an example of
a. experimental research
b. post-facto research
c. quasi-experimental
d. repeated-measures
Question 3For a z score of 1.35 the z score table indicates a percentage value of
41.15. This means that
a. 41.15 of the cases fell below a z score of +1.35
b. 41.15 of the cases fell above a z score of +1.35
c. 41.15 of the cases fell between z scores of +1.35
d. 41.15 of the cases fell between a z score of +1.35 and the mean
Question 4In order to calculate the z test, one must know
a. the sample's true standard deviation
b. the amount of sampling error present
c. the parameter mean, the parameter standard deviation and the sample mean
d. the exact amount of bias contained in the sample
Question 5Between-groups variability refers to
a. differences in numbers between conditions.
b. differences in numbers within each condition.
c. different people in each condition.
d. a repeated-measures ANOVA.
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