Way The following are lengths (in centimeters) of fifty cut by
a machine in a sawmill
33,49,60,58,59,71,42,88,68,91,54, 32,81,59,41,55,38,56,8
6,52,50,69,50,87,77,33,71,42,69,9 3,61,51,23,76,63,96,26,
70,66,80,44,52,46,33,68,39,61,71, 48,66. Using class
interval of 21-30, 31-40, 41-50etc.
Construct the frequency distribution table from your
table; Find the () mean (ii) standard deviation (iii)
variance.