Frequency, Cumulative Frequency, Relative Frequency

Which of these could be a cumulative frequency graph?

• 
• 

The graph shows the masses of some pumpkins grown on an allotment. What is the median?

• 15

• 14

• 10

• 18

What is the median length?

• 40.5 cm
• 30 cm
• 24.5 cm
• 32 cm

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

Find the cumulative frequencies.

• 28, 56, 84, 100

• 28, 58, 70, 72, 74, 76

• 33%, 37%, 20%, 7%, 7%, 7%

• 28, 30, 12, 2, 2, 2

What is the median score on the test?

• 50

• 55

• 40

• 60

What is the interquartile range?

• 42

• 73

• 50

• 31

the difference between the upper and lower quartiles

• interquartile range
• median
• mode
• mean