Homework Help Forum: Statistics

Posted by Bob on Thursday, October 29, 2009 at 7:16pm.

how do you find equation of the least-squared line (line of best fit) from 2-vars stats and the correlation?

• Statistics - MathGuru, Saturday, October 31, 2009 at 5:52pm

  How about this formula: predicted y = (rSy/Sx)X - (rSy/Sx)xbar + ybar ...where r = correlation, Sy = sd of y, Sx = sd of x, and X is the variable in 'a + bx' equation. Note: xbar = mean of x; ybar = mean of y. I hope this helps and is what you were asking.

  
  

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