Basic Math Examples

Find the Mean 7/8 of 23.7
78 of 23.7
Step 1
The mean of a set of numbers is the sum divided by the number of terms.
78+23.72
Step 2
Simplify the numerator.
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Step 2.1
To write 23.7 as a fraction with a common denominator, multiply by 88.
78+23.7882
Step 2.2
Combine 23.7 and 88.
78+23.7882
Step 2.3
Combine the numerators over the common denominator.
7+23.7882
Step 2.4
Rewrite 7+23.788 in a factored form.
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Step 2.4.1
Multiply 23.7 by 8.
7+189.682
Step 2.4.2
Add 7 and 189.6.
196.682
Step 2.4.3
Divide 196.6 by 8.
24.5752
24.5752
24.5752
Step 3
Divide 24.575 by 2.
12.2875
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.
12.3
 [x2  12  π  xdx ]