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

            (ii) How many children watched television for 15 or more hours a week?

Answers (1)
S Sayak

2 children watched television for 15 or more hours a week as we can see from the frequency distribution table. Frequency of the class interval 15 - 20 is 2.

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