the table shows the total amount of rain fall for bay city in January, February, and march the has data from last year and this year

Question

January last year=5.3
February last year=1.6
march last year=2.4

This year
January=7.0
February=3.3
march=2.0

What's the difference between last years mean for these three months and this years?

Answer 1

To find the mean for last year, we add up the total rainfall for January, February, and March and divide by 3:

Mean for last year = (5.3 + 1.6 + 2.4) / 3 = 3.1

To find the mean for this year, we add up the total rainfall for January, February, and March and divide by 3:

Mean for this year = (7.0 + 3.3 + 2.0) / 3 = 4.1

The difference between last year's mean and this year's mean is:

4.1 - 3.1 = 1.0

Therefore, the difference between last year's mean and this year's mean for the total rainfall in January, February, and March is 1.0 inches.