Question 13The following is the frequency distribution of duration for 100 calls made on a mobile phone :Duration(in s)Number of calls95−125 14125−155 22155−185 28185−215 21215−245 15Calculate the average duration (in sec) of a call and also find the median from a cumulative frequency curve.

Question 13The following is the frequency distribution of duration for

1.	Question 13The following is the frequency distribution of duration for 100 calls made on a mobile phone :Duration(in s)Number of calls95−125 14125−155 22155−185 28185−215 21215−245 15Calculate the average duration (in sec) of a call and also find the median from a cumulative frequency curve.
Answer» Question 13 The following is the frequency distribution of duration for 100 calls made on a mobile phone : $\begin{matrix} D u r a t i o n (i n s) & N u m b e r o f c a l l s 95 - 125 & 14 125 - 155 & 22 155 - 185 & 28 185 - 215 & 21 215 - 245 & 15 \end{matrix}$ Calculate the average duration (in sec) of a call and also find the median from a cumulative frequency curve.