The salaries of the employees at four companies are summarized below. Answer the questions about them.
Company A: The mean salary is
$42,000
and the range of salaries is
$59,000
.
Company B: The mean salary is
$37,000
and the range of salaries is
$62,000
.
Company C: The mean salary is
$35,000
and the range of salaries is
$54,000
.
Company D: The mean salary is
$38,000
and the range of salaries is
$53,000
.
(a) Based on the information above, which company's salaries have the least variability?
Company A
Company B
Company C
Company D
(b) Based on the information above, which company has the lowest salaries on average?
Company A
Company B
Company C
Company D
(a) Based on the information above, which company's salaries have the least variability?
Company C
(a) To determine which company's salaries have the least variability, we can compare the ranges of the salaries.
- Company A has a salary range of $59,000.
- Company B has a salary range of $62,000.
- Company C has a salary range of $54,000.
- Company D has a salary range of $53,000.
Since Company D has the smallest range of salaries, it can be concluded that Company D has the least variability in salaries.
Therefore, the answer is Company D.
(b) To determine which company has the lowest salaries on average, we can compare the mean salaries.
- Company A has a mean salary of $42,000.
- Company B has a mean salary of $37,000.
- Company C has a mean salary of $35,000.
- Company D has a mean salary of $38,000.
Since Company C has the lowest mean salary, it can be concluded that Company C has the lowest salaries on average.
Therefore, the answer is Company C.