MCQOPTIONS
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| 1. |
The arithmetic mean of 12 data point is 79. Later it was found that two data points were wrongly taken as 83 and 68 in place of 78 and 97. The actual mean is |
| A. | 79 |
| B. | 75 |
| C. | 81 |
| D. | 77 |
| Answer» D. 77 | |