Mean and standard deviations of 10 observations are 20 and 2 respectively. If p `(p ne 0)` is multiplied to each observation and then q `(q ne 0)` is subtracted then new mean and standard deviation becomes half of original value . Then find q

The mean and standard deviation of observations are 8 and 14 respectively. If each observation be multiplied by 3, the find the new and mean and new standard deviation of the resulting observation.

6.The mean and the standard deviation (s.d.) of 10 observations are 20 and 2 respectively.Each of these 10 observations is multiplied by p and then reduced by q ,where p!=0 and q!=0 .If the new mean and new s.d.become half of their original values, then q is equal to : (1)-10 (2) 10 (3) -5 (4) -20

The mean and standard deviation of 6 observations are 8 and 4 respectively . If each observation is multiplied by 2, find the new mean and new standard deviation of the resulting observation.

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.

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.