the mean of 20 observation is 25 . if each observation is multiplied by 2 , then find the mean of new observations .
Mean of 20 observation = 25
lets take a example , the observations are 1,2,3
So the mean = (1+2+3)/3 = 2
if the observations are multiplied by 2 , then new observations are 2,4,6, hence the mean is (2+4+6)/3 = 4.
Hence the initial mean is multiplied by 2, if the observations are multiplied by 2.
So the mean of 20 observation, if multiplied by 2 is 25 тип2 = 50
lets take a example , the observations are 1,2,3
So the mean = (1+2+3)/3 = 2
if the observations are multiplied by 2 , then new observations are 2,4,6, hence the mean is (2+4+6)/3 = 4.
Hence the initial mean is multiplied by 2, if the observations are multiplied by 2.
So the mean of 20 observation, if multiplied by 2 is 25 тип2 = 50