Histogram

Front

What is a histogram?

Back

A histogram is a type of bar graph that represents the frequency distribution of numerical data. It shows how many data points fall within certain ranges or intervals.

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

Back

The height of a bar in a histogram represents the number of data points (frequency) that fall within the corresponding interval.

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How do you determine the intervals in a histogram?

Back

Intervals in a histogram are determined by dividing the range of data into equal parts, called bins. Each bin represents a specific range of values.

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What is the purpose of using a histogram?

Back

The purpose of using a histogram is to visually summarize and analyze the distribution of a dataset, making it easier to identify patterns, trends, and outliers.

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

Back

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

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

Back

A histogram is used for continuous data and shows frequency distributions, while a bar graph is used for categorical data and compares different categories.

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What does it mean if a histogram is skewed to the right?

Back

If a histogram is skewed to the right, it means that most of the data points are concentrated on the left side, with fewer high values stretching out to the right.

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What does it mean if a histogram is symmetric?

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If a histogram is symmetric, it means that the data is evenly distributed around the center, with similar frequencies on both sides.

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How do you read the intervals on a histogram?

Back

To read the intervals on a histogram, look at the x-axis where the intervals are labeled, and check the corresponding height of the bar to find the frequency.

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What is the cumulative frequency in a histogram?

Back

Cumulative frequency is the running total of frequencies up to a certain interval, showing how many data points fall below a specific value.