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

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Detailed Solution

(i) Grouped frequency distribution table with class width 5.

The data is represented in the grouped frequency distribution is tabulated below:

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

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