Question

The difference of a given month's rainfall from the average monthly rainfall is called the deviation. What is the deviation for each month shown?

average monthly rainfall 3.6
given month may 2 3/5; june 7/8; July 4 1/4

Answer 1

If you add all of them up you will get 43/2

Answer 2

Deviation:

may : 1

june: 0.875

july: 0.65

Explanation:

It's given that the difference of a given month's rainfall from the average monthly rainfall is called the deviation .

To find : deviation for each month: may 2 3/5; june 7/8; July 4 1/4:

Solution :

Average monthly rainfall = 3.6

Rainfall in may =
`2(3)/(5)` = 2.6

Deviation = Average monthly rainfall - month's rainfall ( may ) = 3.6 - 2.6 = 1

Rainfall in june = 3.6 - 0.875 =
`(7)/(8)=2.725`

Deviation = Average monthly rainfall - month's rainfall ( june ) = 0.875

Rainfall in july =
`4\tfrac{1}{4}=(17)/(4)=4.25`

Deviation = Average monthly rainfall - month's rainfall ( july ) = 4.25 - 3.6 = 0.65