Let’s go one-by-one through the answer choices:

(1) Median is the middle number

Since there are 4 data points, we take the average of the middle two.

For Company 1, the average of 32,000 and 35,000 is not greater than 37,000 and for company 2, the average of 35,500 and 37,000 is also not greater than 37000.

(2) The mean salary: add them up and divide by 4…the 4 numbers for Company 1 are 30, 32, 35 and 38 while the 4 for Company 2 are 29, 35.5, 37 and 65…that 65 is going to make the mean salary of Company 2 greater than Company 1

(3) Range = High – Low

Company 2 Range = 65,000 – 29,000

Company 1 Range = 38,000 – 30,000

The salary range in company 2 is greater than the salary range of company 1

(4) Mean Age company 1 = (25 + 27 + 28 + 33)/4 = 113/4

Mean age company 2 = (25 + 28 + 29 + 31)/4 = 113/4

The mean age is the same at both companies

2 points 🙂