The mean salary of 5 employees is $34600. The median is $35700. The mode is $3700. If the highest paid employee gets a $3900 raise, then what is the new mean, median and mode?

Answer 1

the raise increases the mean from 34600 to 34600+3900/5 = 35380.

The median will not change, since only the highest salary has increased. The number of salaries above and below the median has not changed.

Same for the mode, since the wording of the question implies that there was a single employee with that salary.