The mean and standard deviation for a, b and 2 are 3 and 1 respectively, then value of ab is

The mean and standard deviation of 1,2,3,4,5,6 are

the mean and standard deviation of 1,2,3,4,5,6 are

If the mean and standard deviation of 5,3,7,a,b are 5 and 2 respectively, then a and b are roots of equation.

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

If the mean and the standard deviation of the data 3,5,7,a,b are 5 and 2 respectively, then a and b are the roots of the equation :

The mean and standard deviation of six observations are 8 and 4, respectively. If each observation is multiplied by 3, find the new mean and new standard deviation of the resulting observations

The mean and standard deviation of six observations are 8 and 4, respectively. If each observation is multiplied by 3, find the new mean and new standard deviation of the resulting observations

The mean and standard deviation of six observations are 8 and 4, respectively. If each observation is multiplied by 3, find the new mean and new standard deviation of the resulting observations

The mean and standard deviation of six observations are 8 and 4, respectively. If each observation is multiplied by 3, find the new mean and new standard deviation of the resulting observations.