T-Test: What It Is With Multiple Formulas and When To Use Them

T-Test: What It Is With Multiple Formulas and When To Use Them t table Student t Distribution Probabilities Table Chi Squared Distribution tci Sample results of several t tests table Table 2 Results of Curve-Fitting Analysis Examining the Time Course of Fixations to the Target Logistic parameter

tci t-Distribution Table t The shaded area is equal to α for t = tα df 1 2

true7 t-Table Table entries are values of t corresponding to proportions in one tail or in two tails combined df 1-tailed, , , , , 2-tailed STATISTICAL TABLES 2 TABLE t Distribution: Critical Values of t Significance level Degrees of Two-tailed test: 10% 5% 2% 1% % % freedom One