Session #6 - Inferential Statistics & Review
... • An established probability level which serves as the criterion to determine whether to accept or reject the null hypothesis • It represents the confidence that your results reflect true relationships • Common levels in education • p < .01 (I will correctly reject the null hypothesis 99 of 100 time ...
... • An established probability level which serves as the criterion to determine whether to accept or reject the null hypothesis • It represents the confidence that your results reflect true relationships • Common levels in education • p < .01 (I will correctly reject the null hypothesis 99 of 100 time ...
Week 7: Linear model assumptions and diagnosis
... Assumption number 4, zero conditional mean, is about the population, not the model in the sample We saw from the first order conditions that the residuals always add up to zero and that the covariance, and thus correlation, between the residuals and the explanatory variables is zero The distinction ...
... Assumption number 4, zero conditional mean, is about the population, not the model in the sample We saw from the first order conditions that the residuals always add up to zero and that the covariance, and thus correlation, between the residuals and the explanatory variables is zero The distinction ...
Sampling and Hypothesis Testing
... We go ahead and draw the sample, and calculate a sample mean of (say) 97. If there’s a probability of .95 that our x̄ came from within 4 units of µ, we can turn that around: we’re entitled to be 95 percent confident that µ lies between 93 and 101. We draw up a 95 percent confidence interval for the ...
... We go ahead and draw the sample, and calculate a sample mean of (say) 97. If there’s a probability of .95 that our x̄ came from within 4 units of µ, we can turn that around: we’re entitled to be 95 percent confident that µ lies between 93 and 101. We draw up a 95 percent confidence interval for the ...
Cohen`s d, Cohen`s f, and η2
... variance in the scores explained by group membership is .4472 = .20. This is a squared point-biserial correlation coefficient, but is more commonly referred to as eta-squared. ...
... variance in the scores explained by group membership is .4472 = .20. This is a squared point-biserial correlation coefficient, but is more commonly referred to as eta-squared. ...
