Mean Median Mode

Mean Median Mode & Range

Liberal Arts 2

Poll

Do you remember how to find mean, median, mode?

• Beginner

• Intermediate

• Expert

Mean

• the average of all numbers in a data set

• the sum of numbers divided by total amount of numbers

• Example: 3,3,3,6,7,7,13 (Add data together)

• 3 +3 + 3+6 + 7+ 7+ 13 = 42

• Then divide answer by total amount of numbers (42 /7)

• The mean of this data set will be 6

Multiple Choice

Find the mean: 1,3,6,9,11,12,14

• 42

• 56

• 8

• 7

Median

• the middle number in a sequence (think of the media in the middle of a street

• order your numbers from smallest to largest and locate your middle number

• ex: 1,2,3,4,5,6,7

• the middle number is 4

• Median would be 4

Multiple Choice

Find the median: 2,14,3,13,5,10,6,8,7

• 5

• 10

• 7

• 6

Mode

• the number that occurs the most (frequent)

• organize numbers from smallest to largest and locate the number that appears most often

• ex: 2,6,9,4,12,12,3,10

• 2,3,4,6,9,10,12,12

• the number that appears most often is 12

• Mode will be 12

Multiple Choice

Find the mode: 1,8,2,2,7,5,7,3,4,4,4

• 4

• 2

• 7

RANGE

• difference between the lowest and the highest values in the data set

• Order numbers from lowest to highest

• Subtract lowest number from highest number 

• ex: 4,6,9,3,7
  
  

• 2,4,6,7,9

• 9-2

• Range is 7