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138 = = CHAPTER 5 CHAPTER EXERCISES (Answers to odd-numbered exercises appear in c. 10 Appendix C.) d. 0. 1. The following data represent a

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138 = = CHAPTER 5 CHAPTER EXERCISES (Answers to odd-numbered exercises appear in c. 10 Appendix C.) d. 0. 1. The following data represent a distribution of e. 1 speeds (in miles per hour) at which individuals 7. The were traveling on a highway. ave 64 80 64 70 de 76 79 67 72 dis 65 73 68 65 a. 67 65 70 62 67 68 65 64 Organize these data into a frequency distribution with frequency (f) and relative frequency (rf) columns. 2. Organize the data in Exercise 1 into a class interval frequency distribution using 10 intervals with fre- quency (f and relative frequency (rf) columns. 3. Which type of figure should be used to represent the data in Exercise 1-a bar graph, histogram, or frequency polygon? Why? Draw the appropriate figure for these data. 6 4. Calculate the mean, median, and mode for the data set in Exercise 1. Is the distribution normal or skewed? If it is skewed, what type of skew is it? Which measure of central tendency is most appropriate for this distribution, and why? 5. Calculate the mean, median, and mode for the following four distributions (a-d): O I OO OO OO UT UT W W W H D

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