Fundamental Statistics in Psychology and Education

01 level alpha analysis of variance Appendix average beta binomial distribution biserial centile chance Chap chi square class interval coefficient of correlation column combined comparison components composite computed contingency table correction criterion curve degrees of freedom determined diagram difference between means equal error of estimate example expected experimental F ratio F test factor frequencies given independent variables indicates individuals intercorrelations kind limits linear mathematical mean square measurements median method multiple normal distribution normal-curve null hypothesis number of degrees observations obtained one-tail test pairs Pearson percent percentage phi coefficient population mean prediction probability procedure proportion psychological random sampling range ranks regression equation reject reliability rows sample mean sampling distribution sampling statistics scale sets significant standard deviation standard error statistical sum of squares tetrachoric tion two-tail test validity values weights within-sets X₁ zero ΣΧ