Quartiles

What are the quartiles for the following set of numbers?

8, 11, 20, 10, 2, 17, 15, 5, 16, 15, 25, 6

• Q₁ = 15, Q₂ = 16, Q₃ = 15.5

• Q₁ = 6, Q₂ = 13, Q₃ = 17

• Q₁ = 7, Q₂ = 13, Q₃ = 16.5

• Q₁ = 8, Q₂ = 13, Q₃ = 16

What is the interquartile range for the following set of numbers?

4, 5, 6, 8, 9, 11, 13, 16, 16, 18, 20, 21, 25, 30, 31, 33, 36, 37, 40, 41

• 20

• 22

• 24

• 37

What are the quartiles for the following set of numbers?

13, 18, 6, 20, 25, 11, 9, 18, 3, 30, 16, 9, 8, 23, 26, 17

• Q₁ = 22.5, Q₂ = 10.5, Q₃ = 8.5

• Q₁ = 9, Q₂ = 16.5, Q₃ = 19

• Q₁ = 10, Q₂ = 16.5, Q₃ = 21.5

• Q₁ = 9, Q₂ = 16.5, Q₃ = 21.5

Jake did a survey of the numbers of brothers and sisters of the children in his class. He recorded the results as follows:

What is the upper quartile?

• 1

• 3

• 3.5

• 4

Find the Quartile 1 of the following data set:

2, 3, 4, 5, 5, 5, 7,

• 3

• 4

• 5

• 6

Find the median of the box and whisker plot.

• 58

• 60

• 62

• 64

Tags

CCSS.6.SP.B.5

CCSS.6.SP.A.2

CCSS.6.SP.A.3

CCSS.6.SP.B.4

Find the Quartile 1 of the box and whisker plot.

• 60

• 62

• 64

• 66

Tags

CCSS.6.SP.B.5

CCSS.6.SP.A.2

CCSS.6.SP.A.3

CCSS.6.SP.B.4

Find the Quartile 3 of the box and whisker plot.

• 58

• 64

• 60

• 66

Tags

CCSS.6.SP.B.5

CCSS.6.SP.A.2

CCSS.6.SP.A.3

CCSS.6.SP.B.4

Find the lower quartile (Q1) of the following set of scores 6, 7, 8, 9, 11, 13, 15

• 13
• 7

• 9
• 6

Tags

CCSS.6.SP.B.5

CCSS.6.SP.A.2

CCSS.6.SP.A.3

Find the IQR (Q3 - Q1)  of the data

20, 22, 25, 29, 31

• 30
• 21
• 25
• 9