If the sm of 10 data values is 265 then their mean is ____.

If the mean of the following data is 26, then find the value of p:

If the mean of the following data is 26, then find the value of p:

If the mean of the following data is 13.5, then the value of p is

Let the data, 4, 10, x, y, 27 be in the increasing order. If the median of the data is 18 and its mean deviation about mean is 7.6, then the mean of this data is:

The mean of 12 values of a data is calculated as 19.25. If one more value is included in the data, then for the 13 values of the new data the mean becomes 20. Find the value of 13th observation.