Ch. 22  Two Population Proportions for Large Samples
Notation: Two samples require appropriate subscripts p1 and p2, n1 and n2
Properties of the Sampling Distribution of p1 p 2 :
If the random samples on which p1 and p 2 are based are selected independen
Ch. 7 Scatterplots, Association, and Correlation
So far, weve seen univariate data. This section, however, considers bivariate data and
how two numerical variables are related. Methods of description are introduced here and
formalized in Ch. 27.
Terminolo
Chapters 16:
Population vs. sample Parameter vs. statistic
Statistics: Descriptive vs. inferential
Types of variables
Quantitative vs. Qualitative
/

Discrete Continuous
Tables, charts & graphs
 frequency tables
 qualitative: bar graph/pie chart
 ste
Chapters 16:
Population vs. sample Parameter vs. statistic
Statistics: Descriptive vs. inferential
Types of variables
Quantitative vs. Qualitative
/

Discrete Continuous
Tables, charts & graphs
 frequency tables
 qualitative: bar graph/pie chart
 ste