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20 children were asked about the number of hours they watched to programmes in the previous week. The results were found as follows:
1 6 2 3 5 12 5 8 4 810 3 4 12 2 8 15 1 17 6
Make a grouped frequency distribution table for this data taking class width 5 and one of the class intervals as 5–10. How many children watched television for more than 10 hours a week?
