Bar Graphs and Line Graphs

Front

What is a bar graph?

Back

A bar graph is a visual representation of data using bars of different heights or lengths to show the quantity of each category.

Front

What is a line graph?

Back

A line graph is a type of chart that displays information as a series of data points called 'markers' connected by straight line segments.

Front

When would you use a bar graph instead of a line graph?

Back

You would use a bar graph to compare different categories, while a line graph is used to show trends over time.

Front

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

Back

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

Front

What does the slope of a line in a line graph indicate?

Back

The slope of a line indicates the rate of change; a steep slope means a rapid change, while a flat slope means little or no change.

Front

How can you tell which category has the most votes in a bar graph?

Back

You can tell which category has the most votes by looking for the tallest bar in the graph.

Front

What is the purpose of labeling axes in a graph?

Back

Labeling axes helps to identify what each axis represents, making the graph easier to understand.

Front

What type of data is best represented by a line graph?

Back

Data that shows changes over time, such as temperature or sales over months, is best represented by a line graph.

Front

What is a key in a graph?

Back

A key explains what the symbols or colors in the graph represent, helping to interpret the data.

Front

How do you read a bar graph?

Back

To read a bar graph, look at the height of each bar and compare it to the scale on the axis to determine the value.