100 surnames were randomly picked up from a local telephone directory and a frequency distribution of the number of lettes in te english alphabet in the surnames was found as follows

Write the class interval in which the minimum number of surnames lie.

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 : : Write the class interval in which the maximum number of surnames lie.

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 : : Draw a histogram to depict the given information.

100 surnames were randomly picked up from a local telephone directory and the frequency distribution of the number of lettersin the English alphabetsin the surnames was obtained as follows : Determines the median number of letters in the surnames. Find the mean number of letters in the surnames? Aso, find the modal size of the surnames.

Thirty children were asked about the number of hours they watched TV programmes in the previous week. The results were found as follows : : Make a frequency distribution table for this data, taking class width 5 and one of the class interval as 5— 10