Let the mean and variance of 12 observations be $\frac { 9 } { 2 }$ and 4 respectively. Later on, it was observed that two observations were considered as 9 and 10 instead of 7 and 14 respectively. Find the correct mean and variance.
Let the mean and variance of 12 observations be $\frac { 9 } { 2 }$ and 4 respectively. Later on, it was observed that two observations were considered as 9 and 10 instead of 7 and 14 respectively. Find the correct mean and variance.