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    Least Squares Fitting

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    In fitting a least squares line to n=15 data points, the following quantities were computed: SSxx=55, SSyy=198, SSxy=-88, x-bar=1.3, and y-bar=35.

    Determined the following:
    y=B0+B1X
    y=37.08-1.6X
    SSE=57.2
    S squared = 4.4

    1. Find 90% confidence interval for B1/Interpret answer
    2. Find 90% prediction interval for Y when x=15

    © BrainMass Inc. brainmass.com June 3, 2020, 8:04 pm ad1c9bdddf
    https://brainmass.com/statistics/hypothesis-testing/least-squares-fitting-122296

    Solution Preview

    1. -1.6 +/- t(0.05,13) *2.09

    -1.6 +/- 2.1604*2.09 = [-6.1152 , ...

    Solution Summary

    The solution finds the confidence interval and prediction interval for the regression produced by least squares.

    $2.19

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