Question
The observations of a data are obtained as follows. Prepare a frequency distribution using these data such that class length is $5$ and one of the classes is $30-34$.
$33,35,37,35,34,36,45,42,37,35,34,33,45,46,37,20,21$, $46,44,45,29,27,28,26,54,47,22,33,32,32,41,41,23,31$, $41,23,21,39,23,33,42,41,33,38,36,40,36,38,24,27 .$

Answer

Classes : $20-24,25-29,30-34, \ldots, 50-54$
Frequency: $8,5,10,12,8,6,1$

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