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This quiz focuses on key concepts in statistics, specifically correlation and regression analysis. It covers topics like the coefficient of correlation, its interpretation, and the relationship between variables. The quiz also explores regression models, including the least squares regression line, prediction of dependent variables, and confidence intervals. It provides a comprehensive assessment of understanding in these areas.
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coefficient for the following data. x 1 12 9 6 5 3 2 y 9 4 4 5 7 7 9
results in the smallest sum of errors squared
results in zero sum of errors squared maximizes the sum of errors squared passes through 95% the data points
following model was developed: y = 2,000 + 0.42 x. If a car is driven 30,000 miles, the predicted cost is. 32,