Mathematics
The mean of given observations is :
| C.I. | f |
|---|---|
| 30-40 | 2 |
| 40-50 | 3 |
41
27
71
91
Statistics
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Answer
| C.I. | f | Mean value (x) | fx |
|---|---|---|---|
| 30-40 | 2 | 35 | 70 |
| 40-50 | 3 | 45 | 135 |
| Total | Σf = 5 | Σfx = 205 |
By formula,
Mean = = 41.
Hence, Option 1 is the correct option.
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