Index[SYMBOL] [A] [B] [C] [D] [E] [F] [G] [H] [I] [J] [K] [L] [M] [N] [O] [P] [Q] [R] [S] [T] [V] [W] [X] [Y] [Z] Ramseyer, Gary random data random error 2nd 3rd 4th random sampling Benford's law 2nd defined 2nd random selection game playing and iTunes option random shuffle random thoughts randomness of life ranking determining for players order of cards 2nd 3rd ratio level of measurement 2nd 3rd raw scores converting to z scores standardized scores and Redelmeier, Donald 2nd 3rd regression [See regression (see linear regression\\] regression toward the mean reinforcement relationships averages in comparing groups determining standard error discovering 2nd discrete sampling effect sizes efficient sampling graphing 2nd hypothesis testing and 2nd identifying unexpected identifying unexpected outcomes lottery numbers and predicting outcomes showing cause and effect six degrees of separation statistical inference statistical significance of reliability defined of medical screening tests standardized tests and test score precision reliability theory 2nd research designs categories of 2nd threats to validity research hypothesis 2nd 3rd 4th response rate Rhine, J. B. riffle shuffles 2nd 3rd rising sequences river Rodriguez, M.C. Rothman, Ernest E. roulette fair payouts gambler's fallacy about overview ROUND function 2nd ROUNDDOWN function 2nd ROUNDUP function 2nd rule of four rule of two rule of two plus two |