Suppose the number27is included as an additional data value in Set B. Compute

x

for the new data set.We are to determine the mean of the new set that results when the value27is included as an additional value in Set B. As before, we will first take a closer look at the original set. We are given that Set B hasn= 50data values and mean

x=4.

There are 50 data values in Set B, so we can let

x₁,x₂,,x₅₀

be the data values in the original Set B. Since the mean is equal to 10 we have the following.