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***HYPOTHESIS TESTING IV: CHI SQUARE (chapter 11)
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***OPENING COMMANDS
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***Clear memory
clear all

***Start saving results window
log using "C:\course\progs\Stata11.log", replace text // Windows
log using "/course/progs/Stata11.log", replace text // Macintosh

***Open 2016 GSS
use "C:\course\data\GSS2016.dta", clear // Windows
use "/course/data/GSS2016.dta", clear // Macintosh

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***Complex survey design
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svyset [weight=wtssall], strata(vstrat) psu(vpsu) singleunit(scaled)

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***GENERATING VARIABLES
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***Generate dummy variable for hispanic
tab hispanic, m
tab hispanic, m nolabel

gen hisp=.
  replace hisp=0 if hispanic==1
  replace hisp=1 if hispanic>=2 & hispanic<=50

tab hispanic hisp, m

***Generate race/ethnicity variable
tab race, m
tab race, m nolabel

gen raceeth=.
  replace raceeth=1 if race==1 & hisp==0 //non-hispanic white
  replace raceeth=2 if race==2 & hisp==0 //non-hispanic black
  replace raceeth=3 if hisp==1           //hispanic
  replace raceeth=4 if race==3 & hisp==0 //other

label variable raceeth "Race/Ethnicity"
label define race 1 "White" 2 "Black" 3 "Hispanic" 4 "Other"
label values raceeth race

tab raceeth race, m
tab raceeth hisp, m

***Generate dummy variable for Democrats vs. Republicans
***"Independents" will be missing
tab partyid, m
tab partyid, m nolabel

gen democrat=.
  replace democrat=1 if partyid>=0 & partyid<=2
  replace democrat=0 if partyid>=4 & partyid<=6

label variable democrat "Political party"
label define party 1 "Democrats" 0 "Republicans"
label values democrat party

tab partyid democrat, m
tab democrat

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***CHI SQUARE
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***Opinion about immigration by sex
*Use chi square from these tables
tab letin1 sex, chi col
tab letin1 sex, chi col nofreq

*Use column percentages from this table
svy: tab letin1 sex, col

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***Opinion about immigration by ethnicity
*Use chi square from these tables
tab letin1 hisp, chi col
tab letin1 hisp, chi col nofreq

*Use column percentages from this table
svy: tab letin1 hisp, col

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***Opinion about immigration by race/ethnicity
*Use chi square from these tables
tab letin1 raceeth, chi col
tab letin1 raceeth, chi col nofreq

*Use column percentages from this table
svy: tab letin1 raceeth, col

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***Opinion about immigration by political party
*Use chi square from these tables
tab letin1 democrat, chi col
tab letin1 democrat, chi col nofreq

*Use column percentages from this table
svy: tab letin1 democrat, col

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***CLOSING COMMANDS
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***Save data
save "Stata11.dta", replace

***Save log
log close