The mean of 5 observations is 9. If one observation is excluded, the mean becomes 10.

If all observations are increased by 4, what is the new mean?

The median of the following distribution is 14.4 and the total frequency is 20: Class…

The median of the following distribution is 14.4 and the total frequency is 20: Class…

If m is the mean of p, q, r, s, t, u, v, then what…

The average of u, v, w, x, y, z is 10.What is the average of…

Methods of presentation of data are