1
2
3
4
Correct answer is B
| x | 1 | 2 | 3 | 4 | 5 | Total |
| f | y + 2 | y - 1 | 2y - 3 | y + 4 | 3y - 4 | 8y - 2 |
| fx | y + 2 | 2y - 2 | 6y - 9 | 4y + 16 | 15y - 20 | 28y - 13 |
Mean = ∑fx∑f
∴
\implies 14(28y - 13) = 43(8y - 2)
392y - 182 = 344y - 86
392y - 344y = -86 + 182 \implies 48y = 96
y = 2
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