A First Course in Statistics, 12th Edition

Chapter Notes

Key Terms

• Categories 461

• Cell counts 461

• Cells 461

• Chi-square test 463

• Classes 461

• Contingency table 470

• Contingency table with fixed marginals 477

• Dependence 473

• Dimensions of classification 470

• Expected cell count 464

• Independence of two classifications 479

• Marginal probabilities 470

• Multinomial experiment 461

• Observed cell count 471

• One-way table 462

• Sampling distribution of ( ${\widehat{p}}_1- {\widehat{p}}_2$) 451

• Sample surveys 451

• Two-way table 470

Key Symbols/Notation

$p_1- p_2$	Difference between population proportions
$p_1- p_2$	Difference between sample proportions
SE	Sampling error of estimation
$p_{i,0}$	Value of multinomial probability $p_1$ hypothesized in $H_0$
${\chi }^2$	Chi-square test statistic used in analysis of categorical data