Q. 8.     Thirty children were asked about the number of hours they watched TV programmes in the previous week. The results were found as follows:

              1         6         2         3         5         12         5         8         4         8

              10       3         4         12         2         8        15        1        17         6

              3         2         8         5         9          6         8         7         14       12

            (i) Make a grouped frequency distribution table for this data, taking class width 5 and one of the class intervals as 5 - 10.

Answers (1)

The highest number of hours for which a child watched TV = 17

The lowest number of hours for which a child watched TV = 1

The class intervals with class width 5 would, therefore, be 1 - 5, 5 - 10, 10 - 15, 15 - 20

The representation of the given data in the form of a frequency distribution table is as follows.

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