Cumulative Frequency Distribution

How many students scored 40% or below on the test?

• 21

• 22

• 20

• 15

The graph shows the masses of some pumpkins grown on an allotment. How many pumpkins were grown altogether?

• 30

• 27

• 28

What is the median length?

• 40.5 cm
• 30 cm
• 24.5 cm
• 32 cm

Approximately how many items were longer than 34 cm?

• None
• 8
• 7.5
• 7

What is the Lower Quartile Length?

• 28 cm
• 30 cm
• 33 cm
• 20 cm

What is the Upper Quartile Length?

• 28 cm
• 30 cm
• 33 cm
• 20 cm

What is the Interquartile Range?

• 28 cm
• 12 cm
• 33 cm
• 5 cm

the difference between the upper and lower quartiles

• interquartile range
• median
• mode
• mean

Which data set has the largest median?

• 1, 2, 5, 6, 9
• 2, 4, 4, 7
• 2, 2, 6, 7, 9
• 1, 1, 3, 5, 8, 11 

What is the interquartile range for the given graph?

• About 60
• About 7
• About 10
• Not enough information