PS390 Statistical Reasoning in Psychology Exam 1 Answers (Ashworth College)

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• A. Grade point average (3.2, 2.5, etc.) • B. Number of friends (0, 1, etc.) • C. Birth position in the family (first, second, etc.) • D. Nationality (U.S., Japanese, etc.) Question 14 of 20 5.0/ 5.0 Points If a psychologist summarizes data for a variable in a frequency table, but finds that there are so many values for the variable that the table is too cumbersome to be useful, the next step would be to make a: • A. histogram. • B. frequency polygon. • C. grouped frequency table. • D. bar chart. Question 15 of 20 5.0/ 5.0 Points Readers of research articles may expect to find the mean reported in: • A. the text. • B. a table. • C. a graph. • D. Any of the above Question 16 of 20 5.0/ 5.0 Points If a psychologist rating empathic responses to strangers' distress on a scale of 1 to 20 finds that MOST participants have ratings of either 8 or 16, the distribution of ratings is: • A. bimodal. • B. unimodal. • C. rectangular. • D. normal. Question 17 of 20 5.0/ 5.0 Points Another way to describe a positively skewed distribution is to say that: • A. the distribution is skewed to the left. • B. the distribution is skewed to the right. • C. more scores are piled up at the high end of the range. • D. it illustrates a ceiling effect. Question 18 of 20
5.0/ 5.0 Points In a symmetrical distribution with a mean of 15, the median would be: • A. equal to 15. • B. less than 15. • C. greater than 15. • D. Either b or c Question 19 of 20 5.0/ 5.0 Points Based on the scores 1, 9, 3, 6, 1, 2, 6, 2, 2, and 8, a score of 4 is the: • A. mode. • B. median. • C. mean. • D. standard deviation. Question 20 of 20 0.0/ 5.0 Points The BEST way to display a nominal variable is to use a: • A. histogram. • B. grouped frequency table. • C. bar graph. • D. line graph.
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Page 3: • A. 0.67. • B. 2.83. • C. 3.

PS390 Statistical Reasoning in Psychology Exam 1 Answers (Ashworth College)

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