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Summarizing Quantitive Variables

by David Spade, PhD
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    About the Lecture

    The lecture Summarizing Quantitive Variables by David Spade, PhD is from the course Statistics Part 1. It contains the following chapters:

    • Summarizing Quantitative Variables
    • Stem and Leaf Plots
    • Shape of a Distribution
    • Interquartile Range
    • Example: Making a Boxplot
    • How we describe Quantitative Variables

    Included Quiz Questions

    1. A histogram can be used to summarize the distribution of a quantitative variable.
    2. A bar chart can be used to summarize the distribution of a quantitative variable.
    3. A contingency table can be used to summarize the distribution of a quantitative variable.
    4. A pie chart can be used to summarize the distribution of a quantitative variable.
    1. The five-number summary is made up of the minimum, the first quartile, the median, the third quartile, and the maximum.
    2. The five-number summary is made up of the mean, median, standard deviation, interquartile range, and range.
    3. The five-number summary is made up of the mean, the median, the minimum, the maximum, and the interquartile range.
    4. The five number summary is made up of the mean, the first quartile, the third quartile, the minimum, and the maximum.
    1. We look for all of the things described in Answer a, b and c when describing a distribution of a quantitative variable.
    2. We do not look at the shape of the distribution.
    3. We do not look for the center of the distribution.
    4. We do not look for the spread of the distribution.
    1. The upper whisker of a boxplot always ends at the maximum, and the lower whisker of a boxplot always ends at the minimum.
    2. The width of the box gives the interquartile range.
    3. The line in the middle of the box gives the value of the median.
    4. A boxplot hides the number of modes in the distribution.
    1. We typically use the mean and the standard deviation to describe the center and spread of a symmetric distribution.
    2. We typically use the five-number summary to describe a symmetric distribution.
    3. We typically use the median and the interquartile range to describe the center and spread of a symmetric distribution.
    4. We typically use the median and the range to describe the center and spread of a symmetric distribution.

    Author of lecture Summarizing Quantitive Variables

     David Spade, PhD

    David Spade, PhD


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