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Thirty children were asked about the num...

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 5 and one of the class intervals as 5-10.
(ii) How many children watched television for 15 or more hours a weak ?

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