An academic clinical psychologist uses Beck's Depression Inventory, a validated scale with scores ranging from 0 to 63, with higher scores indicating greater levels of depression, to measure depression levels in the population of 1,000 incoming freshmen students. She creates a frequency distribution of her findings. What should be displayed on the vertical axis?
A) the number of times each possible score occurred
B) each possible score
C) the mean of the 1,000 scores
D) the categorical labels "Not Depressed" and "Depressed"
A) the number of times each possible score occurred
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Smoking is negatively associated with ______.
A. both education and income B. education, but not income C. income, but not education D. neither income nor education
The group of drugs known as SSRls work primarily by interfering with the reabsorption of _____ in the brain.
Fill in the blank(s) with the appropriate word(s).
Which of the following tests is a nonparametric alternative for a test in which the same participants are observed in each of three or more groups?
A. Friedman test B. Kruskal-Wallis H test C. Mann-Whitney U test D. Wilcoxon signed-ranks t test
Which is likely to produce the shallowest search slopes in a visual search task?
a. a small range of set sizes b. searching for a red X among green Os c. a large range of set sizes d. searching for a black T among rotated black Ls