JEE Main 2024 Mathematics question
The variance σ² of the data | xᵢ | 0 | 1 | 5 | 6 | 10 | 12 | 17 | |---|---|---|---|---|---|---|---| | fᵢ | 3 | 2 | 3 | 2 | 6 | 3 | 3 | is .
Answer: 29
Solution
N = 22 and the mean is (0 + 2 + 15 + 12 + 60 + 36 + 51)/22 = 176/22 = 8. The
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