JEE MainMathematicsStatisticsNumerical+4 / −1
Consider the statistics of two sets of observations as follows :
If the variance of the combined set of these two observations is , then the value of n is equal to .
| Size | Mean | Variance | |
|---|---|---|---|
| Observation I | 10 | 2 | 2 |
| Observation II | n | 3 | 1 |
If the variance of the combined set of these two observations is , then the value of n is equal to .
Numerical answer
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