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11. The median is the value below which and above which approximately 50 percent of the measurements
12. An independent variable is a predictor variable that can be used to describe, predict, or control a
13. The relative frequency is the frequency of a class divided by the total number of measurements.
14. The box-and-whiskers display is a graphical portrayal of data sets that depict both the central tendency
and variability of the data.
15. When establishing the classes for a frequency table it is generally agreed that the more classes you use the
better your frequency table will be.
16. If there are 7 classes in a frequency distribution, then the fourth class will always contain the median.
17. The sample cumulative distribution function is non-decreasing.
18. Range is a better measure of variation than standard deviation.
19. A normal population has 99.73 percent of the population measurements within _____ standard deviations
of the mean.
20. A numeric characteristic of a sample is a(n) ____________.
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