1.a Bar Graph and Pie Chart

Front

What is a bar graph?

Back

A bar graph is a visual representation of data using bars of different heights or lengths to compare quantities across categories.

Front

What is a pie chart?

Back

A pie chart is a circular statistical graphic divided into slices to illustrate numerical proportions, where each slice represents a category's contribution to the whole.

Front

How do you calculate the percentage of a category in a pie chart?

Back

To calculate the percentage, divide the part (category value) by the whole (total value) and multiply by 100.

Front

What is the purpose of using a bar graph?

Back

Bar graphs are used to compare different groups or track changes over time.

Front

What is the purpose of using a pie chart?

Back

Pie charts are used to show the relative proportions of different categories within a whole.

Front

How can you determine which category has the highest value in a bar graph?

Back

By comparing the heights or lengths of the bars, the tallest bar represents the category with the highest value.

Front

What does it mean if a pie chart slice is larger than another?

Back

A larger slice indicates a greater proportion of that category compared to the others.

Front

How do you find the total number of respondents from a bar graph?

Back

Add the values of all the bars together to find the total number of respondents.

Front

What is the relationship between a bar graph and a pie chart?

Back

Both are used to represent data visually, but bar graphs compare quantities while pie charts show parts of a whole.

Front

What is a key in a bar graph?

Back

A key (or legend) explains what each bar represents, often using colors or patterns.