Mathematics
The weights in grams of 50 apples picked at random from a consignment are as follows :
131, 113, 82, 75, 204, 81, 84, 118, 104, 110, 80, 107, 111, 141, 136, 123, 90, 78, 90, 115, 110, 98, 106, 99, 107, 84, 76, 186, 82, 100, 109, 128, 115, 107, 115, 119, 93, 187, 139, 129, 130, 68, 195, 123, 125, 111, 92, 86, 70, 126
Form the grouped frequency table by dividing the variable range into intervals of equal width of 20 g.
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Answer
Minimum weight = 68 g
Maximum weight = 204 g
Given class width = 20 g
So we can take the class intervals as
60 - 80, 80 - 100, 100 - 120, 120 - 140, 140 - 160, 160 - 180, 180 - 200, 200 - 220
Frequency distribution table :
| Weights (in g) | Tally-Marks | Frequency |
|---|---|---|
| 60 – 80 | 5 | |
| 80 – 100 | 13 | |
| 100 – 120 | 17 | |
| 120 – 140 | 10 | |
| 140 – 160 | I | 1 |
| 160 – 180 | 0 | |
| 180 – 200 | III | 3 |
| 200 – 220 | I | 1 |
| Total | 50 |
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