The mean of 10 observation is 15. If one observation 15 is added, then find the new mean.

The mean of 10 observations is 15. If one observation 15 is added, then the new mean is 16 (b) 11 10 (d) 15

The mean of 10 observations is 15. If one observation 15 is added, then the new mean is (a) 16 (b) 11 (c) 10 (d) 15

The mean of 18 observation is 7 and if each observation 5 is added,then the new mean will be

The mean of 9 observations is 15 .If one more observation is added to the series,the mean becomes 16 .The value of 10 th observation is

The mean of 7 observations is 7. If each observation is increased by 2, then the new mean is

The mean of 20 observations is 45. If each observation is divided by 3, the new mean is 15