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9 Cards in this Set

  • Front
  • Back

What is a residual value?

It is the value of the deviation of a data point from a slop line, relative to the y axis.

What should the sum of squared residuals be if you have a good slope line?

zero!

What is the method of least squares?

It is a method that finds the best location for the straight line function because it estimates values for the slope, and the intercept that minimises the sum of squared residuals.

What are the two fundamental equations in the linear regression model?

- Full regression equation


- Regression model equation

How do the full regression equation and the regression model equation differ?

'Model' equations will always have a predicted Y score on the LHS, and no residual score on RHS (e)

of x and y, which is the dv and iv?

X - INDEPENDENT


Y - DEPENDENT

What is a and b in the regression equations?

a - intercept


b - slope

What is a partial regression coefficient?

The regression slope parameter, noted as b, in multiple linear regression.




(Regression w/ 2 or more IVs)

What are the two features we focus on in the linear regression model?

- The strength of the overall prediction model



- The strength of the prediction of each individual IV considered separately within the overall model.