题目内容

9. What is the term associated with the upper or lower boundary of a set of scores used in the creation of a frequency distribution?

A. Class interval
B. Variation
Central tendency
D. Skewness

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8. Which of the following is not a measure of central tendency?

A. Standard deviation
B. Mean
C. Median
D. Mode

7. Inferential statistics is most often used for which of the following?

A. Summarizing data
B. Describing data
Collecting data
D. Interpreting data

6. What is the most common measure of variability?

A. Variance
B. Standard deviation
C. Range
D. Mode

5. Who popularized the use of the correlation coefficient?

A. Francis Galton
B. Charles Darwin
C. Robert Fischer
D. Max Planc