Bar Graphs, Circle Graphs, and Dot Plots

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.

Front

What is a circle graph (pie chart)?

Back

A circle graph, or pie chart, is a circular statistical graphic divided into slices to illustrate numerical proportions.

Front

What is a dot plot?

Back

A dot plot is a simple way to display data using dots above a number line, where each dot represents one data point.

Front

How do you find the total number of people surveyed in a bar graph?

Back

Add the values represented by each bar to find the total number of people surveyed.

Front

What does the height of a bar in a bar graph represent?

Back

The height of a bar represents the quantity or frequency of the category it represents.

Front

How do you calculate the percentage of a category in a circle graph?

Back

Divide the part (category value) by the whole (total value) and multiply by 100.

Front

What is the purpose of a dot plot?

Back

A dot plot is used to show the frequency of data points in a simple and clear manner.

Front

How can you determine the difference between the highest and lowest values in a data set?

Back

Subtract the lowest value from the highest value to find the difference.

Front

What does a whole circle graph represent in terms of percentage?

Back

A whole circle graph represents 100%.

Front

How do you interpret the data in a bar graph?

Back

Look at the height of the bars to compare the quantities of different categories.