Bar Graphs & Histograms

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 histogram?

Back

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

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 using a histogram?

Back

The purpose of using a histogram is to show the distribution of data points across different intervals or ranges.

Front

What does the x-axis represent in a bar graph?

Back

The x-axis typically represents the categories being compared.

Front

What does the y-axis represent in a histogram?

Back

The y-axis represents the frequency or count of data points within each interval.

Front

How can you determine the mode from a histogram?

Back

The mode can be determined by identifying the interval with the highest bar (frequency) in the histogram.

Front

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

Back

A bar graph compares different categories, while a histogram shows the distribution of numerical data across intervals.

Front

How do you find the total number of data points represented in a histogram?

Back

To find the total number of data points, add the heights of all the bars in the histogram.

Front

What is an interval in a histogram?

Back

An interval in a histogram is a range of values that groups data points together for frequency counting.