The mean of a data is 15 and the sum of the observations is 195. Find the number of observations in the data.

The mean of a data is 15 and the sum of the observations is 195. The number of observations is (a) 13 (b) 19 (c) 16 (d) 17

The mean of a data is 15 and the sum of the observations is 195. The number of observations is 13 (b) 19 16 (d) 17

The means of 5 observations is 16. Find the sum of these observations.

If the mean of 10 observations is 15, then the sum of these observations is

If the mean of 15 observations is 16, find the sum of the 15 observations.

The range of a data is x, the median and the mode of the data is 7 each. If the number of observations is odd and all observations are integers, then find the least value of x ("tange "ne 0)

The median, mode , and mean of a data is 9, if there are five integers in the data and the range of the data is 4. If the least value of the data is 7, then find the number of different observations in the data.

Median is one of the observations in the data if number of observations is____________