Mathematics
The water bills (in rupees) of 32 houses in a locality are given below. Construct a frequency distribution table with a class size of 10.
80, 48, 52, 78, 103, 85, 37, 94, 72, 73, 66, 52, 92, 85, 78, 81, 64, 60, 75, 78, 108, 63, 71, 54, 59, 75, 100, 103, 35, 89, 95, 73.
Statistics
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Answer
Here, maximum = 108 and minimum = 35.
Range = 108 - 35 = 73.
Let us form 8 classes of each size 10.
Since, we want to score 108 in last class and 110 is the upper limit of the last class, so the lower limit of first class is 30.
A frequency distribution with a class size of 10 is follows:
| Classes | Tally marks | Frequency |
|---|---|---|
| 30 - 40 | II | 2 |
| 40 - 50 | I | 1 |
| 50 - 60 | IIII | 4 |
| 60 - 70 | IIII | 4 |
| 70 - 80 | 9 | |
| 80 - 90 | 5 | |
| 90 - 100 | III | 3 |
| 100 - 110 | IIII | 4 |
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