Basic Math Examples

Find the Mean 88 , 89 , 65 , 62 , 83 , 63 , 84 , 63 , 74 , 64 , 71 , 82 , 66 , 88 , 79 , 60 , 86 , 93 , 99 , 60 , 85
, , , , , , , , , , , , , , , , , , , ,
Step 1
The mean of a set of numbers is the sum divided by the number of terms.
Step 2
Simplify the numerator.
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Step 2.1
Add and .
Step 2.2
Add and .
Step 2.3
Add and .
Step 2.4
Add and .
Step 2.5
Add and .
Step 2.6
Add and .
Step 2.7
Add and .
Step 2.8
Add and .
Step 2.9
Add and .
Step 2.10
Add and .
Step 2.11
Add and .
Step 2.12
Add and .
Step 2.13
Add and .
Step 2.14
Add and .
Step 2.15
Add and .
Step 2.16
Add and .
Step 2.17
Add and .
Step 2.18
Add and .
Step 2.19
Add and .
Step 2.20
Add and .
Step 3
Divide.
Step 4
The mean should be rounded to one more decimal place than the original data. If the original data were mixed, round to one decimal place more than the least precise.