Cumulative frequency is the total of all frequencies up to a defined class. It is the 'running total' of frequencies.

Constructing a cumulative frequency graph

Maths

Interpreting a cumulative frequency graph

Constructing box plots

Comparing box plots

Interquartile range

Histograms with equal bar width

Histograms with unequal bar width

Moving between tables and histograms

Summary statistics from histograms

Constructing histograms and box plots using technology

Problem solving with cumulative frequency and histograms

In the prior unit, pupils compared two different sets of data. In this unit, pupils consider cumulative frequency graphs and histograms and compare these with other known graphical representations.

In this unit, pupils consider cumulative frequency graphs and histograms, and compare these with other known graphical representations.

Graphical representations of data: cumulative frequency and histograms

{{ }} frequency is the total of all frequencies up to a defined class.  It is the 'running total' of frequencies.

What is the missing cumulative frequency?

When plotting the points on a cumulative frequency graph you plot the cumulative frequency against what?

After the points have been plotted what should you do next?

What coordinates should be plotted for the third point?

This is a table showing the colours of some cars in a car park.  Which of the following could be a title for the third column?

This table shows the colours of 100 cars in a car park.  How many are white?

What is the upper boundary of this group?  $$20 < x \leq40$$

Which two numbers are covered in this table?

What are the coordinates of point A?  (Remember to write your answer using brackets.)

What are the coordinates of point B?  (Remember to write your answer using brackets.)

Constructing a cumulative frequency graph

Lesson outcome