Mean, Median, Mode, & Range
What is the mode of the following data set? 12, 8, 19, 24, 1, 28, 12, 10, 12, 29, 7, 10, 9
- 12 is the mode because it is mentioned three times in the data set - 10 is not the mode because it is only mentioned two times
Which chip did 6th grade like the most? Cheetos - 14 students Takis - 33 students Doritos - 8 students Popcorn - 20 students
- Takis - 33 students like to eat Takis the most. - Doritos are least liked (only eaten by 8 people)
What is the range of the following data set? 12, 8, 19, 24, 1, 28, 12, 10, 12, 29, 7, 10, 9
- The range is 28 - Subtract the largest number - smallest number 29 - 1 = 28
What is the interquartile range of the following data set? 12, 8, 19, 24, 1, 28, 12, 10, 12, 29, 7, 10, 9
13 Interquartile range: Q3 - Q1 Q1 = 8.5 Q3 = 21.5 Q3 - Q1 = 21.5 - 8.5 = 13 - The upper/lower medians are decimals between there is no true upper/lower median. - You have to add them together/divide by 2 (finding the mean) ** You need to order the numbers from least to greatest **
What is the median of the following data set? 145, 270, 321, 256, 278, 325, 298
278 - Middle number - need to order the numbers from least to greatest 145, 256, 270, 278, 298, 321, 325
What is the interquartile range of the following data set? 145, 270, 321, 256, 278, 325, 298
65 Interquartile range: Q3 - Q1 Q1 = 256 Q3 = 321 Q3 - Q1 = 321 - 256 = 65 - The upper/lower medians are decimals between there is no true upper/lower median. - You have to add them together/divide by 2 (finding the mean) ** You need to order the numbers from least to greatest **
What is mode?
MODE - Most Often number in the data set
What is median?
Middle number
What is mean?
average
What is range?
the difference between the highest and lowest scores in a distribution * largest # - smallest #
