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Q. |
If X1, X2, X3, ... Xn, be n observations having arithmetic mean and if Y =4X ± 2, then is equal to: |
A. | 4X |
B. | 4 |
C. | 4 ± 2 |
D. | 4 ± 2 |
Answer» C. 4 ± 2 |
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