2 Mean/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
3 MedianThe 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
4 ModeThe 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.
5 RangeThe 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.