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?

The coefficient of variation and standard deviation of an ungrouped data are 60 and 21 respectively. If 15 is added to every observation of the data, then the coefficient of variation of the new data is

The mean and standard deviation for a,b and 2 are 3 and 1 respectively,then value of ab 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, then the new standard deviation of 10 item set given is

The sums of the deviations of a set of values measured from 15 and respectively.Find the value of and mean.

If the mean and standard deviation of a data are 8 and 2 respectively then the co-efficient of variation 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