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The mean is the usual , so: add them and divide the sum by number of data
35
45
30
35
40
25
----------
210
The mean is .
The mode is the number that is than any other, so is the mode.
The median is the , so I'll have to rewrite the list in order:
25
30
35
35
40
45
There are six numbers in the list, so the middle one will be the (3rd or 4th)number:
So, the median is .
The variance is a measure of how far each value in the data set is from the mean. Here is how it is defined:
Subtract the mean from each value in the data. This gives you a measure of the distance of each value from the mean.
The mean is .
is simply the (positive) square root of the variance.
