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The number of telephone calls received at an exchange in 245 successive on 2-minute intervals is shown in the following frequency distribution :Number of calls01234567Frequency1421254551403912Compute the mean deviation about the median. |
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Answer» Given, Numbers of observations are given. To Find: Calculate the Mean Deviation Formula Used: Mean Deviation = \(\frac{\Sigma f|d_i|}{n}\) Explanation. Here we have to calculate the mean deviation from the median. So, We know, Median in the even terms \(\frac{3+5}{2}\) , Therefore, Median = 4 Let xi =Number of calls And, fi = Frequency
N = 245 Mean Deviation = \(\frac{\Sigma f|d_i|}{N}\) Mean deviation for given data = \(\frac{336}{245}\) = 1.49 Hence, The mean deviation is 1.49 |
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