Test Bank for Scientific American: Presenting Psychology, 3rd Edition by Deborah Licht

Name: Class: Date:

Appendix A_3e

Indicate the answer choice that best completes the statement or answers the question.
1. A qualitative variable:
a. can always be rank ordered.
b. cannot be assigned numbered units.
c. cannot be a semantic category.
d. must be a number greater than 1.

2. An example of a qualitative variable is:
a. midterm exam scores for the class.
b. age.
c. the number of students in a class.
d. gender.
3. In a negatively skewed distribution, the:
a. mode is greater than the mean and median.
b. median is greater than the mean and mode.
c. mean is greater than the median and mode.
d. median is between the mode and mean.
4. Professor Manley wants to calculate the mean for a recent test. She should:
a. look for the most frequent test score obtained on the exam.
b. look for the middle text score by putting the scores in rank order.
c. calculate the average variation in test scores to get the mean.
d. sum all test scores and divide by the number of test scores.
5. Professor Asif has just presented a descriptive statistic to her class. Professor Asif presented:
a. the results from a test of a hypothesis.
b. a prediction about general trends.
c. the probability that the experimental results occurred by chance.
d. the average score in her data set.
6. When the classes of data are presented on the x-axis and the number of occurrences for each class is
displayed on the y-axis and the frequency for each class appears as a vertical bar, this is referred to as a:
a. frequency polygon.
b. histogram.
c. scatterplot.
d. stem-and-leaf plot.




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