The standard deviation of a distribution is 30. If each observation is increased by 5, then the new standard deviation will be

The standard deviation of 25 numbers is 40. If each of the numbers in increased by 5, then the new standard deviation will be -

The standard deviation of 25 numbers is 40. If each of the numbers in increased by 5, then the new standard deviation will be -

The standard deviation of 25 numbers is 40. If each of the numbers in increased by 5, then the new standerd deviation will be -

The standard deviation of 25 numbers is 40. If each of the numbers in increased by 5, then the new standerd deviation will be -

The standard deviation of a poisson distribution is 4 then its mean is

The standard deviation of 20 observations is sqrt(5) . If each observation is multiplied by 2 , find the standard deviation and variance of the resulting observations.

If standard deviation of a set of observation is 4 and if each of the observations is divided by 4, then the standard deviation of new set of observations is

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.