Arithmetic mean (average) = (X1+X2+X3+...+Xn) / n
Geometric mean = (X1 * X2 * X3 * ... * XN)1/N
Median refers to the middle number (in a sorted list of numbers).
To find the median, place the numbers you are given in value order and find the middle number.
Example: find the Median of {13, 23, 11, 16, 15, 10, 26}.
Put them in order: {10, 11, 13, 15, 16, 23, 26}
The middle number is 15, so the median is 15.
Note: If there are two middle numbers, you average them to get the median.
To find the median, place the numbers you are given in value order and find the middle number.
Example: find the Median of {13, 23, 11, 16, 15, 10, 26}.
Put them in order: {10, 11, 13, 15, 16, 23, 26}
The middle number is 15, so the median is 15.
Note: If there are two middle numbers, you average them to get the median.