Question

The consumption of electricity for one month (in units) of 40 houses in a colony are given below:
59, 52, 65, 101, 115, 108, 95, 65, 98, 62, 84, 76, 63, 128, 121, 61, 118, 108, 116, 129, 81, 87, 78, 89, 75, 92, 105, 129, 81, 87, 95, 116, 127, 107, 100, 80, 82, 65, 91, 101.
Construct a grouped frequency distribution table by taking classes 50 $-$ 70, 70 $-$ 90, 90 $-$ 110, ....

Answer 1

The frequency distribution table is given below:

Class	Tally Marks	Frequency (f)
50$-$70		8
70$-$90		11
90$-$110		13
110$-$130		8