Bar graphs and histograms

Front

What is a bar graph?

Back

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

Front

What is a histogram?

Back

A histogram is a type of bar graph that represents the frequency distribution of numerical data, where the bars touch each other.

Front

How do you read a bar graph?

Back

To read a bar graph, look at the height or length of the bars to determine the value they represent for each category.

Front

What is the purpose of a bar graph?

Back

The purpose of a bar graph is to compare different categories of data visually.

Front

What is the difference between a bar graph and a histogram?

Back

A bar graph displays categorical data, while a histogram displays continuous data.

Front

How can you find the total number of items represented in a bar graph?

Back

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

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

What type of data is best represented by a histogram?

Back

Continuous numerical data is best represented by a histogram.

Front

How do you determine the mode from a histogram?

Back

The mode is the category with the highest bar in the histogram.

Front

What is the x-axis in a bar graph?

Back

The x-axis is the horizontal line that typically represents the categories being compared.