The Quick Change Oil Company has a number of outlets in the metropolitan Seattle area. The daily number of oil changes at the Oak Street outlet in the past 20 days are: 51 90 72 56 65 98 55 62 79 59 70 62 66 80 94 79 63 73 71 85 The data are to be organized into a frequency distribution. Click here for the Excel Data File a. How many classes would you recommend? Number of classes

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