Inference involving Proportions [z-test for proportions & Chi-square test of homogeneity] in R
Автор: xan mos
Загружено: 2022-03-28
Просмотров: 1670
This video begins with the manual calculations and concepts the z-test for single proportion and two proportions, as well as the Chi-square test of homogeneity. Use of R (or RStudio) are demonstrated at the latter part.
Data sets and handout (in pdf format) may be downloaded at https://drive.google.com/drive/folder...
Video Chapters:
0:00 Intro
0:13 Overview
1:39 Statistical inference Involving a Single Proportion
2:23 Derivation of the z-test for single proportion (from normal approximation of binomial distribution)
3:44 Assumptions of the z-test for single proportion
5:23 Example 1 (z-test for single proportion)
9:42 Calculation of 95% confidence interval for single proportion
11:57 Statistical inference involving Two Proportions
13:12 Example 2 (z-test for two proportions)
19:44 Chi-square test of homogeneity
21:57 Example 3 (Chi-square test of homogeneity)
39:07 Performing the examples in R (or RStudio) using prop.test() function
46:15 Calculation of 95% confidence interval for the difference of two proportions
51:19 Outro
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