Effect of a Constant on Variance
The table shows the salaries for six employees. If each employee’s salary is increased by , what is the effect on the variance of the salaries?
| Employee | Salary () |
|---|---|
| 1 | 3000 |
| 2 | 7000 |
| 3 | 15000 |
| 4 | 22000 |
| 5 | 23000 |
| 6 | 38000 |
A
The variance increases by
B
The variance increases by
C
The variance doubles
D
The variance remains unchanged
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