Proportional Graphs and Charts

What is the purpose of a pie chart in data interpretation?

• To represent data in a linear format

• The purpose of a pie chart in data interpretation is to visually represent the proportions of different categories within a dataset.

• To display only one category of data

• To confuse the audience with unnecessary details

If a pie chart shows that 25% of the data is represented by a certain color, what does this percentage mean?

• 25% of the data is not of the specified color.

• 25% of the data is of the specified color.

• The color is irrelevant to the data.

• The color represents 75% of the data.

Explain how to interpret data relationships in a pie chart.

• Look at the legend to understand the data relationships

• Measure the circumference of each slice

• Compare the size of each slice to understand the proportion of each category in the data.

• Count the number of colors used in the chart

When interpreting a pie chart, why is it important to consider the total percentage of the chart?

• To confuse the audience

• To make the chart look more colorful

• To provide context and enable accurate comparison of individual segments.

• To hide important information

The graph above shows the price of games in dollars.  Is the graph proportional and how do you know?

• The graph is proportional  because it is linear.

• The graph is proportional because it is linear and passes through the origin.

• The graph is not proportional because it does not pass through the origin.

• The graph is not proportional because it is not linear and it does not pass through the origin.

Does the line go through the origin?

• No

• Yes

Which graph shows a proportional relationship between x and y? (a)  

• A

• B

• C

• D

In a pie chart, what does each slice represent?

• Each slice represents a different texture

• Each slice represents a different color

• Each slice represents a different shape

• Each slice represents a category or value being compared.

How can you calculate the percentage represented by each slice in a pie chart?

• Add the size of each slice to get the total percentage

• Multiply the size of each slice by 10 to get the percentage

• Divide the size of each slice by the total size of the pie chart, then multiply by 100 to get the percentage.

• Subtract the size of each slice from 100 to get the percentage

What is the difference between a pie chart and a bar graph in terms of data representation?

• Pie charts use bars to compare data values, while bar graphs show proportions in a circular graph.

• Pie charts and bar graphs both represent data in a linear format.

• Pie charts show proportions in a circular graph, while bar graphs use bars to compare data values.

• Pie charts are used for qualitative data, while bar graphs are used for quantitative data.