2Mean/Average To find the mean or average of a set of data you first : Add the numbersCount the number of dataDivide the total of the numbers by the number of data.6,4,6,5,7,7,4,9=48There are 8 sets of dataDivide 48 by 8 = 6To check, 8 x 6= 48
3MedianThe median number of a set of data is the number found in the middle.Arrange your data in order from least to greatest to find the middle number. Sometimes you will have two middle numbers.45679
4ModeThe mode of a set of data is the number that occurs most often in the data.You may have more than one mode.4,6, and 7 are your modes in this set of data.
5RangeThe range of a set of data is found by subtracting the least number from the greatest number.9 – 4 = 5In this set of data the range is from 4 to 9 with the exact range of 5.