To get the best deal on a CD player, Tom called eight...

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David T. Temple Trident University International MAT 201 Frequency Distributions Module 3 - Case Dr. Karonika 31 January 2013 1. To get the best deal on a CD player, Tom called eight appliance stores and asked the cost of a specific model. The prices he was quoted are listed below: $ 298 $ 125 $ 411 $ 157 $ 231 $ 213 $ 304 $ 272 Find the Standard deviation
1. x x i x i -x (x i -x)^ 298 251.3 46.7 2180.89 125 251.3 -126.3 15951.69 411 251.3 159.7 25504.09 157 251.3 -94.3 8892.49 231 251.3 -20.3 412.09 2
213 251.3 -38.3 1466.89 304 251.3 52.7 2777.29 272 251.3 20.7 428.49 2011 2010.4 .6 57613.92 Mean 251.3 2. When investigating times required for drive-through service, the following results (in seconds) were obtained. Find the range, variance, and standard deviation for each of the two samples, then compare the two sets of results. Wendy's 120 123 153 128 124 118 154 110 MacDonald's 115 126 147 156 118 110 145 137

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