Cumulative Data Analysis and Displays

• 5

• 7

• 23

• 16

How many scores were 26 or below?

• 10

• 20

• 5

• 25

What is the missing number in the cumulative frequency column?

• 19

• 9

• 15

• 22

What is the missing number?

• 4

• 5

• 20

• 36

Which of these could be a cumulative frequency graph?

• 
• 

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

• 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

When drawing a cumulative frequency graph, we should join the points with...

• ... a curve

• ... straight lines

When plotting a cumulative frequency graph for grouped data, we should plot the points

• At the bottom of each group (far left on the x axis)

• In the middle of each group

• At the top of each group (far right on the x axis)

Cumulative frequency always goes on the...

• y axis

• x axis