The number of telephone calls received at an exchange in 245 successive on2-minute intervals is shown in the following frequency distribution:

 Number of calls Frequency 0 14 1 21 2 25 3 43 4 51 5 40 6 39 7 12

Compute the mean deviation about the median.

Asked by Sakshi | 1 year ago |  49

1 Answer

Solution :-

To find the mean deviation from the median, firstly let us calculate the median.

We know, Median is the even term, $$\dfrac{3+5}{2}$$ = 4

So, Median = 8

Let xi =Number of calls

And, fi = Frequency

N = 245

= $$\dfrac{1}{245}$$× 336

= 1.49

The mean deviation is 1.49.

Answered by Aaryan | 1 year ago

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