Illuminations: Bathtub Water Levels

This lesson is similar to Lesson One: Traveling Distances; however, this lesson is designed so students examine real-life data that illustrates a negative slope.

Students interpret the meaning of the negative slope and y-intercept of the graph of the real-life data. By examining the graphical representation of the data, students relate the slope and y-intercept of the least squares regression line to the real-life data. They also interpret the correlation coefficient of the least squares regression line.


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Data, Graphing & Statistics
High School, Educator

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Illuminations (National Council of Teachers of Mathematics)

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