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9. The only measure of...

9. The only measure of central tendency that can be found for nominal data is the a)mean, b)median, c)mode, d)midrange

10. The measure of central tendency that is most afftected by a few large or small numbers is: a)mean, b)median, c)mode, d)range

11. When a distribution is bell-shaped, approximately what percentage of data values will fall within one standard deviation of the mean? a)50%, b)95%, c)68%, d)99.7%

12. What is the relationship between the variance and the standard deviation? What are the symbols used to represent the sample variance and standard deviation? Why is the unbiased estimator of variance used?

13 Nine households had the following number of children per household: 2, 0, 2, 2, 1, 2, 4, 3, 2 - find the mean, median, mode, and midrange for these data.

14. a) Use Chebyshev's theorem to find what percent of the values will fall between 120 and 150 for a data set with mean of 135 and standard deviation of 7.5.

10. The measure of central tendency that is most afftected by a few large or small numbers is: a)mean, b)median, c)mode, d)range

11. When a distribution is bell-shaped, approximately what percentage of data values will fall within one standard deviation of the mean? a)50%, b)95%, c)68%, d)99.7%

12. What is the relationship between the variance and the standard deviation? What are the symbols used to represent the sample variance and standard deviation? Why is the unbiased estimator of variance used?

13 Nine households had the following number of children per household: 2, 0, 2, 2, 1, 2, 4, 3, 2 - find the mean, median, mode, and midrange for these data.

14. a) Use Chebyshev's theorem to find what percent of the values will fall between 120 and 150 for a data set with mean of 135 and standard deviation of 7.5.

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