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For each of the following sets of data, use your calculator to make a scatter plot of the data
and copy it to the set of axes. Then find the regression equation and plot it together with the

1. The table below gives selected times for the world record in the mile run for men and the
year in which it was set. Consider 1900 to be year 0. Use the regression equation you
find to predict the world record in 2020. Can the equation be used to predict future
records indefinitely?
Year

Year-            1911     1915    1933     1942     1944     1954      1958    1966     1981     1993

Record(secs)  255.4    252.6   247.6    244.6    241.6    238       234.5    231.3    228.5    224.4

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Preview: ... r 120. Let x=120, solve for y: y=-0.3879(120)+2-4659.13 y=-46.548+259.13 y=212.582 seconds   This equation, however, cannot be used to predi ...

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Preview: ... i, pleas ...

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