Understanding Basic Statistics 6th Edition by Charles Henry Brase,Corrinne Pellillo Brase

Exercise 31

Critical Thinking Consider two data sets.
Set A: n = 5;
= 10 Set B: n = 50;

= 10
(a) Suppose the number 20 is included as an additional data value in Set A. Compute
for the new data set. Hint:
To compute
for the new data set, add 20 to of the original data set and divided by 6.
(b) Suppose the number 20 is included as an additional data value in Set B. Compute
for the new data set.
(c) Why does the addition of the number 20 to each data set change the mean for Set A more than it does for Set B