In order to calculate a percentile rank, you need to know
a. how many cases are below the score of interest.
b. whether the distribution is normal or skewed.
c. the standard deviation of the scores
d. the nature of the underlying scale.
a
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According to the Flynn effect, what would happen if psychologists did NOT restandardize IQ tests?
a. Variation of scores on the test would gradually decrease. b. Variation of scores on the test would gradually increase. c. The mean score on the tests would gradually decrease. d. The mean score on the tests would gradually increase.
Stress produces many of its effects on health and well-being by its influence on which system?
a. The respiratory system b. The circulatory system c. The digestive system d. The immune system
At least one of Freud's biographers downplayed the extent of Freud's cocaine use. This is an example of ____.?
a. ?suppressed data b. ?data distorted by translation c. ?lost data d. ?errors of eyewitnesses e. ?a misrepresentation intended to protect Freud's reputation
A child reaches adult levels of visual acuity by about 6 months of age
Indicate whether the statement is true or false