Online Math Dictionary: M
Easy to understand math definitions for KAlgebra mathematics
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magic square  mean  median 
midpoint formula  milligram  millimeter 
millisecond  minuend  Mobius strip 
mode  monomial  multiple 
multiplicity 


Mean The mean of a group of numbers is the same thing as the average. It's weird to define "average" in words, but really easy to show what it is. Look at this list of numbers: 3, 6, 13, 4, 9... Add them up and we get 35... Now, divide by how many numbers there are. There are five numbers, so divide 35 by 5... We get 7 and that's the average of this list of numbers. Notice that some of the numbers are above 7 and some are below. 

Median The median is the middle number of a group. Example: Here's a list of numbers: 2, 8, 5, 9, 12, 11, 1 Arrange them in order: 1, 2, 5, 8, 9, 11, 12 Count in from the front and the back to find the one that's in the middle... The median is 8. 