# Find the Mean (Arithmetic) 95 , 77 , 96 , 77 , 55 , 53 , 95 , 57 , 73 , 62 , 55 , 55

95 , 77 , 96 , 77 , 55 , 53 , 95 , 57 , 73 , 62 , 55 , 55
The mean of a set of numbers is the sum divided by the number of terms.
95+77+96+77+55+53+95+57+73+62+55+5512
Simplify the numerator.
Add 95 and 77.
172+96+77+55+53+95+57+73+62+55+5512
Add 172 and 96.
268+77+55+53+95+57+73+62+55+5512
Add 268 and 77.
345+55+53+95+57+73+62+55+5512
Add 345 and 55.
400+53+95+57+73+62+55+5512
Add 400 and 53.
453+95+57+73+62+55+5512
Add 453 and 95.
548+57+73+62+55+5512
Add 548 and 57.
605+73+62+55+5512
Add 605 and 73.
678+62+55+5512
Add 678 and 62.
740+55+5512
Add 740 and 55.
795+5512
Add 795 and 55.
85012
85012
Cancel the common factor of 850 and 12.
Factor 2 out of 850.
2(425)12
Cancel the common factors.
Factor 2 out of 12.
2⋅4252⋅6
Cancel the common factor.
2⋅4252⋅6
Rewrite the expression.
4256
4256
4256
Divide.
70.83‾
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.
70.8
Find the Mean (Arithmetic) 95 , 77 , 96 , 77 , 55 , 53 , 95 , 57 , 73 , 62 , 55 , 55

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