A/ A pie chart shows the relative market share of cola products. The "slice" for Pepsi- Cola has a central angle of 90 degrees. What is its market share? B/ A set of data consists of 38 observations. How many classes would you recom- mend for the frequency distribution? C/ A set of data consists of 230 observations between $235 and $567. What class interval would you recommend? D/

The Quick Change Oil Company has a number of outlets in the metropolitan Seat- tle area. The daily number of oil changes at the Oak Street outlet in the past 20 days are: 65 98 55 62 79 59 51 90 72 56 70 62 66 80 94 79 63 73 71 85 The data are to be organized into a frequency distribution. a. How many classes would you recommend? b. What class interval would you suggest? c. What lower limit would you recommend for the rst class? cl. Organize the number of oil changes into a frequency distribution. e. Comment on the shape of the frequency distribution. Also, determine the relative frequency distribution