17. Fifteen percent of the students in a School of Business Administration are majoring in Economics, 20% in Finance, 35% in Management, and 30% in Accounting. The graphical device(s) that can be used to present these data is (are):a. only a bar chart.b.both a bar chart and a pie chart.c. a line graph.d. only a pie chart.18. The sum of frequencies for all classes will always equal:

19. The sum of the relative frequencies in any relative frequency distribution always equals:21. In a cumulative percent frequency distribution, the last class will have a cumulative percent frequency equal to:CHAPTER 31.Since the population size is always larger than the sample size, then the sample statistic:a. can never be equal to the population parameter.b. None of the other answers are correct.c. can never be zero.d. can never be larger than the population parameter.2.If the variance of a data set is correctly computed with the formula using n - 1 inthe denominator, which of the following is true?3.Exhibit 3-1A researcher has collected the following sample data.Refer to Exhibit 3-1. The median is:4.The interquartile range is used as a measure of variability to overcome what difficulty of the range?5.__________ can be used to make statements about the proportion of data values

that must be within a specified number of standard deviations of the mean.a. A five-number summaryb. Chebyshev's theoremd. A box plot6.An important numerical measure of the shape of a distribution is the:7.The most frequently occurring value of a data set is called the:8.During a cold winter, the temperature stayed below zero for ten days (ranging from -20 to -5). The variance of the temperatures of the ten day period:

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