Quartiles, IQR and box plots

Question 1

A box plot shows: minimum 10, Q1 13, median 18, Q3 22, maximum 29. What is the interquartile range?

Answer 

Question 2

Find the lower quartile (Q1) of: 3, 4, 13, 15, 17, 17, 20, 21, 28, 33, 35

Answer 

Question 3

A box plot shows: minimum 8, Q1 15, median 19, Q3 22, maximum 31. What is the range?

Answer 

Question 4

Find the lower quartile (Q1) of: 11, 16, 21, 29, 30, 32, 37

Answer 

Question 5

A box plot shows: minimum 7, Q1 13, median 18, Q3 24, maximum 32. What is the median?

Answer 

Question 6

Find the interquartile range of: 5, 5, 5, 6, 7, 12, 29, 33, 37, 38, 39

Answer 

Question 7

A box plot shows: minimum 4, Q1 11, median 15, Q3 19, maximum 27. What is the range?

Answer 

Question 8

Find the interquartile range of: 1, 8, 8, 9, 18, 22, 23, 27, 33, 36, 40

Answer 

Question 9

A box plot shows: minimum 2, Q1 4, median 10, Q3 13, maximum 19. What is the median?

Answer 

Question 10

Find the lower quartile (Q1) of: 1, 10, 16, 18, 33, 37, 40

Answer 

Question 11

A box plot shows: minimum 8, Q1 16, median 23, Q3 28, maximum 31. What is the interquartile range?

Answer 

Question 12

Find the lower quartile (Q1) of: 3, 4, 5, 17, 19, 20, 26, 30, 33, 35, 37

Answer 

Question 13

A box plot shows: minimum 7, Q1 11, median 16, Q3 24, maximum 26. What is the median?

Answer 

Question 14

Find the lower quartile (Q1) of: 12, 15, 20, 21, 32, 33, 36

Answer 

Question 15

A box plot shows: minimum 9, Q1 14, median 17, Q3 20, maximum 28. What is the median?

Answer 

Question 16

Find the lower quartile (Q1) of: 17, 27, 29, 30, 31, 32, 38

Answer