100 surnames were randomly picked up from a local telephone directory and a frequency distribution of the number of letters in the English alphabet in the surnames was found as follows:
(i) Draw a histogram
(ii) write the class interval in which maximum number of surnames lie .

Explanation

Please refer to video for the histogram.

From the histogram, we can see that the height of the bar is maximum in case of class interval `6-8`.

So, class interval `6-8` is the interval where the maximum number of surnames lie.