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?

Reliable Education Group
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 Solution:

(i) The grouped frequency distribution table for the data given in the question, taking class width 5 and one of the class intervals as 5-10 is given below:

Number of HoursFrequency
0-510
5-1013
10-155
15-202
Total30

(ii) From the given table, we can conclude that 2 children watched television for 15 or more hours in a week

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