Task 4. Describe the chart that shows us Food expenditure

Task 5.

Task 6. The charts show changes in the proportion of world population from different regions in 1900 and 2000

Task 7.

a) True or False?

1. More pupils went into higher education in 1994

2. 136 pupils went into employment in 2003

3. More pupils decided on a gap year in 2003

b) Describe the pie charts that analyze what students at one sixth-form college (last year of secondary school) in the UK did after finishing school in 1994 and 2003

1994: 520 Pupils

2003: 680 Pupils

Task 8. Pie chart dictation (time, comparisons)

Listen to your teacher dictate a model essay. Fill in the gaps below and label/divide the charts according to percentages (%) for items.

Title: ________________________________________________________________

Pie chart 1: ______________________________

Pie chart 2: ______________________________

Review of Bar Graphs What is a Bar Graph?

A bar graph is a visual display used to compare the amounts or frequency of occurrence of different characteristics of data. This type of display allows us to:

• compare groups of data, and

• to make generalizations about the data quickly.

When reading a bar graph there are several things we must pay attention to: the graph title, two axes, including axes labels and scale, and the bars. Since bar graphs are used to graph frequencies or amounts of data in discrete groups, we will need to determine which axis is the grouped data axis, as well as what the specific groups are, and which is the frequency axis.

Price of Corn versus Quantity Demanded

The height of the bars is particularly important since they give us information about specific data.

Parts of a Bar Graph

Now let's look at the components of a bar graph individually. There is a lot of information in this section so you may wish to jot down some short notes to yourself.

Graph Title--The graph title gives an overview of the information being presented in the graph. The title is given at the top of the graph. Axes and their labels--Each graph has two axes. The axes labels tell us what information is presented on each axis. One axis represents data groups, the other represents the amounts or frequency of data groups. Grouped Data Axis--The grouped data axis is always at the base of the bars. This axis displays the type of data being graphed.

• Frequency Data Axis--The frequency axis has a scale that is a measure of the frequency or amounts of the different data groups.

• Axes Scale-- Scale is the range of values being presented along the frequency axis.

• Bars--The bars are rectangular blocks that can have their base at either vertical axis or horizontal axis (as in this example). Each bar represents the data for one of the data groups.

Now let's look more closely at how the elements of a bar graph help us get a handle on the information presented in a graph. While there are several ways to do this, here we will present one way to get an overview of a graph using the graph above.

• Graph Title--provides an overview of the type of information given in the bar graph. For the bar graph given, the title indicates that we are looking at data on: