Question

In each of the 100 school, 100 plants were planted by Harit Sena. After two months, the number of plants that survived were recorded as follows.
$\begin{array}{ccccccccccccccccc}65,& 87,& 49,& 73,& 84,& 92,& 93,& 59,& 47,& 65,& 55,& 90,& 86,& 77,& 36,& 48,& 39,\\ 29,& 74,& 56,& 59,& 62,& 72,& 35,& 28,& 82,& 65,& 67,& 95,& 47,& 85,& 58,& 27,& 53,\\ 82,& 28,& 76,& 56,& 59,& 59,& 74,& 58,& 85,& 72,& 66,& 76,& 57,& 67,& 65,& 95,& 54,\\ 54,& 63,& 74,& 59,& 69,& 77,& 39,& 65,& 59,& 45,& 85,& 72,& 69,& 58,& 91,& 64,& 52,\\ 68,& 57,& 75,& 88,& 75,& 96,& 85,& 55,& 63,& 73,& 59,& 58,& 89,& 90,& 48,& 59,& 64,\\ 78,& 89,& 61,& 57,& 69,& 48,& 29,& 74,& 83,& 90,& 85,& 59,& 69,& 87,& 73.& & \end{array}$
Prepare a grouped frequency distribution table.

Answer 1

The frequency distribution table is given below:

Class	Number of Plants	Tally Marks
20$-$30	5
30$-$40	4
40$-$50	7
50$-$60	24
60$-$70	19
70$-$80	17
80$-$90	15
90$-$100	9