Explore BrainMass

Explore BrainMass

    Least squares regression: four questions

    This content was COPIED from BrainMass.com - View the original, and get the already-completed solution here!

    1. The least squares regression line given above is said to be a line which "best fits" the sample data. The term "best fits" is used because the line has an equation that minimizes the ______, which for these data is______.

    2. For the data point (225.3, 308.1), the value of the residual is_____. (Round your answer to at least 2 decimal places.)

    3. The total variation in the sample y values is given by the _____, which for these data is_____.

    4. The value r2 is the proportion of the total variation in the sample y values that is explained by the estimated linear relationship between x and y. For these data, the value of r2 is____.

    © BrainMass Inc. brainmass.com June 3, 2020, 10:00 pm ad1c9bdddf
    https://brainmass.com/statistics/regression-analysis/210200

    Attachments

    Solution Summary

    This solution answers four questions about a least squares regression analysis.

    $2.19

    ADVERTISEMENT