The arithmetic mean and standard deviation of a set of 9 items are 43 and 5 respectively. If an item of value 63 is added to that set, then the new standard deviation of 10 item set given is

The arithmetic mean and standard deviation of a set of 9 items are 43 and 5 respectively , If an item of value 63 is added to that set , find the new mean and standard deviation of 10 item set given

The mean and the standard deviation of data of 8 items are 25 and 5 respectively. If two items 15 and 25 are added to this data, then the variance of the new data is

Mean and standard deviation of 100 items are 50 and 4 respectively. The sum of all squares of the items is

The mean and the standard deviation of a data of 8 items are 25 and 5 respectively. If two terms 15 and 25 are added to this data, then the variance of the new data is

The arithmetich mean and standard deviation of a data of nine numbers are 13 and 5 respectively. If 3 is incoluded as the 10th item of the data, then the variance of the data of ten number is

The mean and standard deviation of a set of values are 5 and 2 respectively. If 5 is added to each value, then what is the coefficient of variation for the bew set of values?

If mean and standard deviation of 100 items are 50 and 4 respectively the find the sum of all the item and the sum of the squares of item.

Mean and standard deviation of 100 items are 50 and 4, respectively . Find the sum of all the item and the sum of the squares of the items.