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Mean, Median, Mode, Range Mode: Occurs most often Example: 42, 67, 94, 63, 12, 12, 78, 45, 23 The number that occurs most often is 12 The mode of the data is 12 Median: When the numbers are in order, this number is in the middle Example: 42, 67, 94, 63, 12, 12, 78, 45, 23 First, put the numbers in order: least to greatest 12, 12, 23, 42, 45, 63, 67, 78, 94 Then find the number in the middle The Median of the data is 45 Mean: (average) Add up all numbers and divide by the number of numbers you added together Example: First, add up all of the numbers 42 + 67 + 94 + 63 + 12 + 12 + 78 + 45 + 23= 436 Then, count how many numbers you added up: 9 Now, divide by 436 by 9 (Use your calculator) The mean of the data is 48.4 Range: The largest number minus the smallest number Example: 12, 12, 23, 42, 45, 63, 67, 78, 94 The largest number: 94 and the smallest number: 12 94-12= 82 The range of the data is 82