quiz 5

• CHI SQUARED STATISTICS

  • If not reject the null hypothesis, the proportions may be as stated in the null hypothesis
• the coefficient of determination or R^2 tells us what?


  The proportion of variability in y accounted for by x
• The line described by a regression equation attempts to what?

  minimise the total squared distance from the points
• CHI SQUARE TEST OF INDEPENDENCE

  • if we reject the null h, there may be no association
• CHI SQUARE TEST OF INDEPENDENCE

  • degrees of freedom (rows-1)(columns-1)