Measures of Position

Find the median.
7, 1, 1, 7, 1, 4, 1

• 4

• 7

• 1

• 5

Find the mode.
12, 5, 9, 18, 22, 25, 5

• 22

• 18

• 9

• 5

Find the median.
5, 15, 10, 20, 15, 10, 15

• 20

• 15

• 10

• 5

Find the Upper Quartile (Q3) of the following numbers:

• 72

• 88

• 94

• There is no Upper Quartile.

When finding the median, what is the FIRST step?

• Mark off the lowest number

• Mark off the highest number

• Find the Middle

• Arrange the number from Least to Greatest

How do you find the Interquartile Range?

• divide the 3rd quartile (Q3) by the 1st quartile

• subtract the biggest number by the smallest number

• divide the biggest number by the smallest number

• subtract the 3rd quartile (Q3) by the 1st quartile (Q1)

Find the Lower Quartile (Q1) of the following numbers:

84, 88, 72, 74, 98, 16, 94

• 72

• 88

• 94

• There is no Lower Quartile.

Find the IQR of the following numbers:
84, 88, 72, 74, 98, 16, 94 

• 78

• 22

• 16

• There is no IQR.

Find the 1st (Q1) , 2nd (Median), and 3rd (Q3) quartile of the data set:

• 1st: 3, 2nd: 6, 3rd: 14

• 1st: 13, 2nd: 5.5, 3rd: 2.5

• 1st: 2.5, 2nd: 5.5, 3rd: 12

• 1st: 14, 2nd: 6, 3rd: 3