In a moderately sketched distrubution, the values of mean and median are 4 and 5 respectively. the value pf mode in such a distrubution is approximately
The algebric sum of deviations of 10 observations measured from 20 is 8, then the mean observation is
Standard deviation of 3, 5, 7, 9, 11, 13 is
Mean devaiation from the mode of the following distrubution 26, 32, 20, 18, 25, 24, 22, 25, 27, 28, 25 is
The GM of 4, 5, 20, 25 is
The greatest positive integer which divides: (n+16) (n+17) (n+18) (n+19) for all n (belongs to) N is
Mean of 25 observations are found to be 78.4, But later on it was found that 96 was misread as 69. The correct mean is
If the median of 21 observatins is 40 and if observation greater than the median is increased by 6, then the median of new data will be
Quartile deviation of 20, 80, 35, 40, 75, 60, 50 is
If 25% of the items are less than 10 and 25% are more than 40, then the coefficient of quartile deviation is: