If `n = 15, bar x = 10 and Sigmax^2 = 1530` then find its standard deviation.

If n = 10 , barx =12 and sum x^(2) = 1530 , then calculate the coefficient of variation.

A data consists of n observations x_(1), x_(2), ..., x_(n). If Sigma_(i=1)^(n) (x_(i) + 1)^(2) = 9n and Sigma_(i=1)^(n) (x_(i) - 1)^(2) = 5n , then the standard deviation of this data is

If the mean and coefficient of variation of a data are 15 and 48 respectively, then find the value of standard deviation.

If the standard deviation of a data is 4.5 and if each value of the data is decreased by 5, then find the new standard deviation.

In a study about viral fever, the number of people affected in a town were noted as Find its standard deviation.

If n=10 , barx=12 , and sumx^(2)=1530 , then calculate the coefficient of variation.

The time taken by 50 students to complete a 100 meter race are given below. Find its standard deviation.