PSYC 3000 Lecture Notes - Lecture 2: Geostationary Operational Environmental Satellite, Effect Size, Type I And Type Ii Errors

• School: Carleton University
• Department: Psychology
• Course: PSYC 3000
• Professor: Deanna C Whelan

Document Summary

Inferential statistic: sample data > population, sample data used to make a conclusion about a population, t(cid:396)(cid:455)i(cid:374)g to (cid:373)ake a(cid:374) (cid:862)i(cid:374)fe(cid:396)e(cid:374)(cid:272)e(cid:863)/u(cid:374)de(cid:396)sta(cid:374)di(cid:374)g i(cid:374) the (cid:396)eal (cid:449)o(cid:396)ld. Non-parametric tests (vs parametric: parametric: normally distributed (parabola, non-pa(cid:396)a(cid:373)et(cid:396)i(cid:272): does(cid:374)"t (cid:374)eed to (cid:271)e (cid:374)o(cid:396)(cid:373)al. Chi-square goodness of fit 1 categorical variable: u(cid:373) of the (cid:862)o(cid:271)se(cid:396)(cid:448)ed-e(cid:454)pe(cid:272)ted(cid:863) s(cid:395)ua(cid:396)ed, di(cid:448)ided (cid:271)(cid:455) (cid:862)e(cid:454)pe(cid:272)ted(cid:863) (cid:448)alue. Chi-square test of independence 2 categorical variables. X2 = [(cid:894)o e) 2 / e] Single variable: multiple response options for the single variable being examined, more than a single response option, religion: catholic, atheist, muslim, christian, buddhism, islam, etc, food: carnivore, vegetarian, vegan, etc. Sample size divided by how many groups. Determine the degrees of freedom df= k-1: re-read the question for the alpha of 0. 05 means that we are allowing ourselves to have a 5% probability of being incorrect (type 1 error) Use alpha and df to look up critical value in a chi-square table.