The mean of 50 observation is 36. if two observation 30 and 42 are to be excluded, then the mena of the reamining observations will be-

The mean of 50 observations is 36. If its two observations 30 and 42 are deleted,then the mean of the remaining observations is

The mean of 50 observations is 36. If two observations 30 and 42 are deleted, then mean of the remaining observations is

The mean of 12 observations is 75. If two observations are discarded, then the mean of the remaining observations is 65. What is the mean of the discarded observations?

The arithmetic mean of 12 observations is 15. If two observations 20 and 25 are removed then the arithmetic mean of remaining observations is

The average of n observation is 40. If two observation of 50 and 60 are added, then the average of all the observations will be 41. What is the value of n?

The arithmetic of 12 observations is 15. If two observations 20 and 25 are removed then the arithmetic mean of remaining observations is

The mean of 30 observations is 25. If two observations 30 and 60 are misread as 20 and 40, then find the correct mean.

The means of 5 observations is 16. Find the sum of these observations.

Mean of eight observations is 25. If one observation 11 is excluded, the mean of the remaining.

The mean of 5 observations is 50. One of the observation was removed from the data, hence the mean became45. Find the observation which was removed