A.Categorical B.Quantitative, continuous C.Quantitative, discrete

4.The number of classes a student missed.

In problems 5 - 8, answer True or False. 5.In an ordered data set, the median of the upper 50 percent of the data set corresponds to a numerical value such that half of the values are below it.

6.Sample data is the set of all possible data values for a given subject under consideration.

7.Of the range, the interquartile range, and the variance, the interquartile range is most influenced by an outlying value in the data set. A.True B.False

8.The standard deviation is the square root of the variance.

9.A data set has only positive values. If the largest value of a data set is doubled, which of the following is not true?

10.If the test scores of a class of 30 students have a mean of 75.6 and the test scores of another class of 24 students have a mean of 68.4, then the mean of the combined group is

11.The heights in centimeters of 5 students are: 165, 175, 176, 159, 170. The sample mean and sample median are respectively: A.170, 169 B.170, 170 C.169, 170 D.176, 169 E.176, 176

12.If a distribution has zero variance, which of the following is true?

13.Which of the following is a measure of variation?

14.Given the following set of numbers, what is the variance? 15 20 40 25 35

15.A set of data is found to have a sample standard deviation of 25. Suppose that 6 is added to each of the numbers in the data set. What can you say about the standard deviation of the new data set? A.It will be unchanged. B.It will increase by 6. C.It will increase by 36. D.It will increase by

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