i need to know what mean, median, mode, and range are?

Answer 1

http://www.purplemath.com/modules/meanmode.htm

Answer 2

MEAN- add all the numbers then divide by how many numbers there r MEDIAN- put all the numbers in order from least to greatest then pick the # in the middle if its 2 #s in the middle add em up then divide it by 2 MODE- the number seen the most RANGE- subtract the biggest number from the smallest number