PSYC 210 Lecture Notes - Lecture 17: Level Of Measurement, Standard Deviation, Test Statistic

• School: Simon Fraser University
• Department: Psychology
• Course: PSYC 210
• Professor: Snjezana Huerta

Document Summary

(cid:1) 210 hypothesis test examples independent t test with homogeneity of variance. Data were collected from 10 randomly-selected first-born daughters and 10 randomly-selected first-born sons. Assumptions to be tested: normality of the distribution of the x1 scores, normality of the distribution of the x2 scores, homogeneity of variance (i. e. , Step 3: specify the test statistic and the null distribution. ~ t(n1 + n2 - 2) n1 = number of first-born daughters, n2 = the number of first-born sons. 2 (cid:3) (cid:1)(cid:1) (cid:2) calculated after collect data. Step 4: specify decision rule(s). (cid:2) = _____; ____-tailed test; df = _____________________________; critical value(s): ________________________ *collect data (using random sampling) & conduct thorough descriptive analyses (see p. 2) Step 6: make a decision re: h0. tobs tcrit (cid:1) 210 hypothesis test examples independent t test with homogeneity of variance. First, calculate the observed standard deviation for each sample: s.