2106 Final Exam Real Exam Questions And Answers

The larger the value of df (n-1) {Ans: the more closely the t distribution approximates z, a normal distribution}T-test {Ans: t = M - mew ----------- SM}Correlation {Ans: describes the relation between two naturally-occurring variables}Calculating effect size {Ans: what is the size of the treatment effect?}Calculating the pearson correlation {Ans: r = covariability of X and Y / variability of X and Y separately}T-test for independent means {Ans: the procedure to test the hypothesis in the t-test for independent samples}When this difference is small relative to sampling error {Ans: t-statistic will be closer to 1 (and we will retain Ho)}Two samples don't always have equal n {Ans: solution: combine, or pool the two samples variances}Assumption of homogeneity of variance {Ans: the assumption that the population variances are the same for all treatment conditions}Combined df for the 2 samples {Ans: df = df1 + df2}Cohen's d in repeated measures {Ans: d = MD ------ s}Partitioning the SS {Ans: 1. Total SS = EX2 - G2/N 2. Between-treatment SS = ET2/n - G2/N 3. within-treatment SS = SS1 + SS2 + SS3}Class example with repeated measures {Ans: 1. state