Histogram Construction and Analysis

This video tutorial explains how to draw a histogram using continuous grouped data, such as car speeds. It covers the concepts of class intervals and class width, and how to calculate frequency density. The tutorial provides step-by-step instructions for drawing a histogram, including scaling axes and plotting bars. The video concludes with a review of the process and encourages viewers to explore further resources.

What type of data is required to draw a histogram?

• Continuous grouped data

• Categorical data

• Discrete data

• Nominal data

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What is the formal name for the intervals in a histogram?

• Bins

• Classes

• Ranges

• Groups

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How do you calculate the class width for an interval?

• Multiply the upper and lower limits

• Divide the upper limit by the lower limit

• Subtract the lower limit from the upper limit

• Add the upper and lower limits

What is the class width for the interval 45 to 30?

• 25

• 20

• 15

• 10

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How is frequency density calculated?

• Frequency added to class width

• Frequency multiplied by class width

• Class width divided by frequency

• Frequency divided by class width

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What is the frequency density for a group with frequency 30 and class width 20?

• 3.0

• 2.5

• 2.0

• 1.5

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What should be placed along the horizontal axis when drawing a histogram?

• Class width

• Frequency density

• Speed

• Frequency

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What should be placed along the vertical axis when drawing a histogram?

• Speed

• Frequency density

• Frequency

• Class width

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What is the highest frequency density value in the given example?

• 1.5

• 3.0

• 7.4

• 2.8

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What is the final step in drawing a histogram?

• Calculating frequency density

• Labeling the axes

• Drawing the bars

• Calculating class width

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