The two sets of observations are given below set 1 mean `= 82.5` deviation `= 7.3` set `2` mean `=48.75` deviation `= 8.35` which of two sets is more consistent? ​

The mean of a set of 20 observations is 8 and of another set of 30 observations is 10. The mean of combined set is

The mean of a set of 12 observations is 10 and another set of 8 observations is 12. The mean of combined set is ______.

The mean of a set of 20 observations is 8 an another set of 30 observations is 10. The mean of combined set is ________.

Two sets each of 20 observations have the same standard derivation 5. The first sethas a mean 17 and second a mean 22. Then the standard deviation of the set obtained by combining the given two sets.

10 is the mean of a set of 7 observations and 5 is the mean of a set of 3 observations, the mean of the combined set is

Mean deviation of 5 observations from their mean 3 is 1.2, then coefficient of mean deviation is

The set which resembles the given set 1, 5, 12 is