Question

Jimmy has listed the amount of money in his wallet for each of the last ten days. He decides to remove day 7, as that was payday. How will this affect the mean?

Answer 1

The mean will reduce

Explanation:

The total amount of money for the ten days divided by number of days will give mean 1, M₁

Removing the value for day seven will reduce the sum of money as it will be for 9 days only.In finding the mean, you will divide by 9 days to get mean M₂

Mean M₂ < M₁