2.2 bar graphs

Front

What is a bar graph?

Back

A bar graph is a visual representation of data using rectangular bars to show the frequency or value of different categories.

Front

How do you read a bar graph?

Back

To read a bar graph, look at the height or length of the bars to compare values across different categories.

Front

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

Back

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

Front

What is the purpose of using a bar graph?

Back

The purpose of using a bar graph is to compare different groups or track changes over time in a clear and visual way.

Front

What is the difference between a vertical and horizontal bar graph?

Back

A vertical bar graph displays bars that rise vertically, while a horizontal bar graph displays bars that extend horizontally.

Front

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

Back

Bar graphs are best for categorical data, where you want to compare different groups.

Front

What is the significance of the x-axis and y-axis in a bar graph?

Back

The x-axis typically represents the categories being compared, while the y-axis represents the values or frequencies.

Front

How can you determine the percentage of a category in a bar graph?

Back

To determine the percentage of a category, divide the value of that category by the total value of all categories and multiply by 100.

Front

What is a stacked bar graph?

Back

A stacked bar graph displays multiple data series stacked on top of each other in a single bar, showing the total and the breakdown of each category.

Front

What is the importance of labeling in a bar graph?

Back

Labeling is important in a bar graph to clearly identify categories and values, making the graph easier to understand.