Question

find the mean,modal and median of lifetime of the 100tubelights from the following data. life time 1000-1099,1100-1199,120-1299,1300-1399,1400-1499,1500-1599,1600-1699,1700-17991800-1899
no of tub light 5,9,11,14,18,17,12,9,5​

Answer 1

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