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The following data gives the sample of typing speed (in words per minutes) for several stenographers: 125 140 170 155 132 175 225 210 125

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The following data gives the sample of typing speed (in words per minutes) for several stenographers: 125 140 170 155 132 175 225 210 125 310. Which one of the following computations for this sample is correct? . O A. The coefficient of variation is 32.90%. . O B. The range is equal to 175. . O C. Sample standard deviation is 55. 1544. . O D. The mean is 177.7 . O E. The median is 165

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