Statistics Examples

11 , 22 , 44 , 77 , 99 , 1010
Step 1
The mean of a set of numbers is the sum divided by the number of terms.
μ=1+2+4+7+9+106μ=1+2+4+7+9+106
Step 2
Simplify the numerator.
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Step 2.1
Add 11 and 22.
μ=3+4+7+9+106μ=3+4+7+9+106
Step 2.2
Add 33 and 44.
μ=7+7+9+106μ=7+7+9+106
Step 2.3
Add 77 and 77.
μ=14+9+106μ=14+9+106
Step 2.4
Add 1414 and 99.
μ=23+106μ=23+106
Step 2.5
Add 2323 and 1010.
μ=336μ=336
μ=336μ=336
Step 3
Cancel the common factor of 3333 and 66.
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Step 3.1
Factor 33 out of 3333.
μ=3(11)6μ=3(11)6
Step 3.2
Cancel the common factors.
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Step 3.2.1
Factor 33 out of 66.
μ=31132μ=31132
Step 3.2.2
Cancel the common factor.
μ=31132
Step 3.2.3
Rewrite the expression.
μ=112
μ=112
μ=112
Step 4
Divide.
μ=5.5
Step 5
Arrange the terms in ascending order.
Median=1,2,4,7,9,10
Step 6
The median is the middle term in the arranged data set. In the case of an even number of terms, the median is the average of the two middle terms.
Median=4+72
Step 7
Remove parentheses.
Median=4+72
Step 8
Add 4 and 7.
Median=112
Step 9
Convert the median 112 to decimal.
Median=5.5
Step 10
Since the mean is equal to the median, the data set is symmetric.
Symmetric
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 [x2  12  π  xdx ] 
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