Professor Yang observed the following scores in her first exam (100, 93, 81, 60). The range for these scores is:
a. 100
b. 81
c. 40
d. 1
C
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A factor that varies in an experiment is called a
a. theory. b. statistic. c. constant. d. hypothesis. e. variable.
______ is determined from the standard deviation of the distribution of sample means using the sample standard deviation to represent the population standard deviation.
A. Standard deviation error B. Estimated standard error C. Sampling standard error D. Estimated sampling error
A person with a high need for achievement (nAch) tends to
a. has a strong desire to have control over others. b. give up on difficult tasks when they are not succeeding. c. have self-confidence and excel in his or her occupation. d. be characterized by all of these.
If age, sex, and race are all the same, who earns more money?
a. attractive people c. underweight people b. educated people d. average-looking people