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प्रश्न
The distribution given below shows the runs scored by batsmen in one-day cricket matches. Find the mean number of runs.
| Runs scored |
0 – 40 | 40 – 80 | 80 – 120 | 120 – 160 | 160 – 200 |
| Number of batsmen |
12 | 20 | 35 | 30 | 23 |
उत्तर
| Runs scored | 0 – 40 | 40 – 80 | 80 – 120 | 120 – 160 | 160 – 200 | Total |
| Number of batsmen `(f_i)` |
12 | 20 | 35 | 30 | 23 | 120 |
| `x_i` | 20 | 60 | 100 | 140 | 180 | |
| `f_ix_i` | 240 | 1200 | 3500 | 4200 | 4140 | 13280 |
Mean `(barx) = (sumf_ix_i)/(sumf_i) = 13280/120` = 110.67 runs
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