ex1223 {Sleuth3}

IQ Score and Income

Description

This is a subset of 2,584 individuals from the 1979 National Longitudinal Study of Youth (NLSY79) survey who were re-interviewed in 2006, who had paying jobs in 2005, and who had complete values for the variables listed below. A goal is to see whether intelligence (as measured by the ASVAB intelligence test score, AFQT, and its Components, Word, Parag, Math, and Arith) is a better predictor of 2005 income than education and socioeconomic status.

Usage

ex1223

Format

A data frame with 2,584 observations on the following 32 variables.

Subject

the subject identification number

Imagazine

a variable taking on the value 1 if anyone in the respondent's household regularly read magazines in 1979, otherwise 0

Inewspaper

a variable taking on the value 1 if anyone in the respondent's household regularly read newspapers in 1979, otherwise 0

Ilibrary

a variable taking on the value 1 if anyone in the respondent's household had a library card in 1979, otherwise 0

MotherEd

mother's years of education

FatherEd

father's years of education

FamilyIncome78

family's total net income in 1978

Race

1 = Hispanic, 2 = Black, 3 = Not Hispanic or Black

Gender

a factor with levels "female" and "male"

Educ

years of education completed by 2006

Science

score on the General Science test in 1981

Arith

score on the Arithmetic Reasoning test in 1981

Word

score on the Word Knowledge Test in 1981

Parag

score on the Paragraph Comprehension test in 1981

Numer

score on the Numerical Operations test in 1981

Coding

score on the Coding Speed test in 1981

Auto

score on the Automotive and Shop test in 1981

Math

score on the Mathematics Knowledge test in 1981

Mechanic

score on the Electronics Information test in 1981

Elec

score on the Paragraph Comprehension test in 1981

AFQT

percentile score on the AFQT intelligence test in 1981

Income2005

total annual income in 2005

Esteem1

self reported answer to 1st self esteem question, 2005

Esteem2

self reported answer to 2md self esteem question, 2005

Esteem3

self reported answer to 3rd self esteem question, 2005

Esteem4

self reported answer to 4th self esteem question, 2005

Esteem5

self reported answer to 5th self esteem question, 2005

Esteem6

self reported answer to 6th self esteem question, 2005

Esteem7

self reported answer to 7th self esteem question, 2005

Esteem8

self reported answer to 8th self esteem question, 2005

Esteem9

self reported answer to 9th self esteem question, 2005

Esteem10

self reported answer to 10th self esteem question, 2005

Source

Ramsey, F.L. and Schafer, D.W. (2013). The Statistical Sleuth: A Course in Methods of Data Analysis (3rd ed), Cengage Learning.

References

National Longitudinal Survey of Youth, U.S. Bureau of Labor Statistics, https://www.bls.gov/nls/home.htm (May 8, 2008).

See Also

ex0222, ex0330, ex0331, ex0524, ex0525, ex0828, ex0923, ex1033

Examples

str(ex1223)