Читать книгу Elementary Regression Modeling - Roger A. Wojtkiewicz - Страница 24

The nominal level categorizes without order or meaningful numerical value:

School control:

public, Catholic, other private

Sex/gender:

female or male

Family structure:

two biological parents, biological/stepparent, single parent, other family

The ordinal level categorizes with order but without meaningful numerical value:

Socioeconomic status (SES) quartile:

lowest, second, third, highest

Parental education:

< high school, high school, BA/BS, master’s degree, PhD or higher

The interval level provides meaningful numerical values:

Standardized score—math:

20.91, . . . , 81.04

Number of siblings:

0, 1, 2, 3, 4, 5, 6, . . .