5. consider the following two sets of incomes. each income is in thousands of dollars
per year.
group 1: 32, 36, 38, 39, 42, 43, 44, 47, 49, 50
group 2: 32, 36, 38, 39, 42, 43, 44, 47, 49, 150
a. find the average or mean salary for each group.
b. how does an extreme value affect the mean?
c. do you think the mean of the second group is a good indication of the typical
salary in that group? explain.

a:

Mean is found by adding all the numbers in a data set, then dividing by the amount of numbers added.

Group 1 Mean: 42

Group 2 Mean: 52

b:

The only extreme value in these data sets is 150. An extreme value makes a mean that makes no sense. It distorts it.

c:

No. Group 2 is not a good indication of the typical salary in the group. It has a value that is a lot higher than all the other salaries in the group.  

  answer:

  write 548 as 500 + 40 + 8. multiply each addend by 5. then add the three products to get 2,740.