In a certain company every worker received a 50perweek rais

In a certain company, every worker received a $ 50-per-week raise. How does this affect the mean salary? The standard deviation of salaries?

Solution

Since every worked gets a hike of $50. So the mean salary will also be hiked by $50.

The stsandar deviation will not change as there is equal amount of increase in every case. SO the sepreadness of the data will neither increase nor decrease