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Find the mean of the children watch TV programmes for the number of hours in the past week using assumed mean method.
 
Hours\(0 - 5\)\(5 - 10\)\(10 - 15\)\(15 - 20\)\(20 - 25\)
Number of children5111458
 
The mean for the given data is
 
(Note: If the answer is a whole number, write as it is. If not, round off the answer to \(2\) decimal places and provide the answer.)