Formulas: Statistics - Regression

  1. How many formulas should I remember?
    • 7.
    • linear regression line
    • Slope formula
    • y@x=0
    • Standard deviation for population/sample
    • R coefficiant
    • SSE formula.
  2. How should the table look like that I will use to calculate the numbers then used in the formulas?
    • Image Upload 1
    • We have (y-y:hat)^2 as an extra column to be calculated when we have done our formula for yhat = ax +b solved. this is we we can calculate Standard error of estimate using this extra column.
  3. What does the regression line formula look like?
    Image Upload 2
  4. What does the slope formula look like in the linear regression line?
    Image Upload 3
  5. What does the formula for y value for x=0 look like?
    Image Upload 4
  6. What does the formula look like that gives value representing the strength of the relationship of the two variables?
    • Image Upload 5
    • use values from tables

    •  
    • n = the nr of dataPAIRS (not induvidual points)
  7. How do we Calculate the Standard error of the Y-Estimate?
    • Image Upload 6  
    • We have (y-yhat)^2 and calculate this for each data-point of Y using out table with this as an extra column. We then use the sum of this column and dived by our N and take the square of this to get our regression SSE.
Author
ccc
ID
344359
Card Set
Formulas: Statistics - Regression
Description
Formulas: Statistics - Regression
Updated