Mean and average are the same.
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median means to find the middle number of a sequence which is in order
It means out of all the numbers which is the middle
The median is simply the number in the middle when ordered from least to greatest. Since there is an even number of terms here, simply find the average of the middle two. In this case, the average of 8 and 11 is 9.5 Therefore, the median is 9.5
Well, honey, the external terms of a ratio are the first and last numbers in the ratio, while the internal terms are the second and third numbers. So if you've got a ratio like 2:5, the external terms are 2 and 5, and the internal terms are... you guessed it... 2 and 5. Math can be a real hoot, can't it?
Arithmetic, Statistics . the middle number in a given sequence of numbers, taken as the average of the two middle numbers when the sequence has an even number of numbers: 4 is the median of 1, 3, 4, 8, 9.