Cumulative Frequency Curves and Quartiles

What is the median length?

• 40.5 cm
• 30 cm
• 24.5 cm
• 32 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

How many students scored 40% or below on the test? (Read the scale carefully!)

• 21

• 22

• 20

• 15

Cumulative frequency always goes on the...

• y axis

• x axis

What is the median score on the test?

• 50

• 55

• 40

• 60

Find the number of patients who waited for more than 80 min for a doctor.

• 12

• 16

• 62

• 64

What is the median age?

• 60

• 55

• 50

• 45

Estimate how many balls had a weight of 130 g or more.

• 78

• 22

• 11

• 32

What is the probability that a student chosen at random has a score of 60% or less on the test?

• 0.50

• 0.60

• 40

• 60