23 , 45

The mean of a set of numbers is the sum divided by the number of terms.

23+452

To write 23 as a fraction with a common denominator, multiply by 55.

23⋅55+452

To write 45 as a fraction with a common denominator, multiply by 33.

23⋅55+45⋅332

Write each expression with a common denominator of 15, by multiplying each by an appropriate factor of 1.

Multiply 23 and 55.

2⋅53⋅5+45⋅332

Multiply 3 by 5.

2⋅515+45⋅332

Multiply 45 and 33.

2⋅515+4⋅35⋅32

Multiply 5 by 3.

2⋅515+4⋅3152

2⋅515+4⋅3152

Combine the numerators over the common denominator.

2⋅5+4⋅3152

Simplify the numerator.

Multiply 2 by 5.

10+4⋅3152

Multiply 4 by 3.

10+12152

Add 10 and 12.

22152

22152

22152

Multiply the numerator by the reciprocal of the denominator.

2215⋅12

Factor 2 out of 22.

2(11)15⋅12

Cancel the common factor.

2⋅1115⋅12

Rewrite the expression.

1115

1115

Divide.

0.73‾

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.

0.7

Find the Mean (Arithmetic) 2/3 , 4/5