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Chapter Three Day Four

Chapter Three Day Four. Least Squares Regression Line. Homework. P. 211 33,35,37. Facts About Least Squares Regression Line. Slope b=r s y / s x Y-intercept line passes thru (x, y) so plug in these values and solve y = bx + a to solve for the y- intercpet. Example.

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Chapter Three Day Four

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  1. Chapter ThreeDay Four Least Squares Regression Line

  2. Homework • P. 211 33,35,37

  3. Facts About Least Squares Regression Line • Slope b=r sy/sx • Y-intercept line passes thru (x, y) so plug in these values and solve y = bx + a to solve for the y-intercpet.

  4. Example • For the 16 changes in NEA: • x = 324.8, sx = 257.66, y = 2.388, and sy = 1.1389. • The correlation is r = -.7786 • Use this information to find the least squares regression line.

  5. EXAMPLE

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