Exemplar Exercise Problem XXV — task. Mathematics CBSE, Class 10.

PDF chapter test TRY NOW

The following is the frequency distribution of duration for

$100$ calls made on a mobile phone.

Duration $in seconds$	$95-125$	$125-55$	$155-185$	$185-215$	$215-245$
Number of calls	$14$	$22$	$28$	$21$	$15$

Calculate the average duration (in sec) of a call and also find the median from the cumulative frequency curve.

Answer:

The mean

$=$

$sec$ .

The median

$=$

$sec$ .

[Note: Enter the answer in two decimal number.]

Did you find an error?

48. Exemplar Exercise Problem XXV