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

Question

Accepted Answer

Answer :

i) our class interval will be 0 - 5 , 5 - 10 , 10 - 15 .....
The group distribution frequency table can be constructed as follows.

ii) The number of children who watched TV for 15 or more hours a week is 2 (i.e,the number of children in class interval 15-20 )

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