Mean, Mode, Median and Range

Do you guys know what is mean,mode,median and range is?  

First what is range, range is when you have to subtract the biggest number to the smallest number, example 2, 4, 5, 6, 9 then you have subtract the biggest number to the smallest number. 

What is median, median is when you need to find the middle number but first you have to put it in order then you find it.

 What is mode, mode is when you have to find the most common number example 2, 3, 5, 6, 6, 6 the most common number is 6 because it has the most numbers.

What is mean, mean is when you ascend in order then plus and then divide the amount of number you have. 

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