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Statistics LibreTexts

4.8: Statistical Literacy

  • Page ID
    2332
  • Skills to Develop

    • Relationship between age and sleep

    Age and Sleep

    The graph below showing the relationship between age and sleep is based on a graph that appears on this web page.

    scatter_plot.png 

    Figure \(\PageIndex{1}\): Graph showing relationship between age and sleep

    Example  \(\PageIndex{1}\)

    Based on the graph in Figure \(\PageIndex{1}\) Why might Pearson's correlation not be a good way to describe the relationship?

    Solution

    Pearson's correlation measures the strength of the linear relationship between two variables. The relationship here is not linear. As age increases, hours slept decreases rapidly at first but then levels off.

    Contributor

    • Online Statistics Education: A Multimedia Course of Study (http://onlinestatbook.com/). Project Leader: David M. Lane, Rice University.