7.8 Comparing Groups R Exercise
The General Social Survey (GSS) is one of the longest running and extensive survey projects in the US. The full dataset includes over 1000 variables spanning demographics, attitudes, and behaviors. The file GSS_w203.RData contains a small selection of a variables from the 2018 GSS.
To learn about each variable, you can enter it into the search bar at the GSS data explorer
## rincome happy sexnow
## $25000 or more: 851 very happy : 701 women :758
## $20000 - 24999: 107 pretty happy :1307 man :640
## $10000 - 14999: 94 not too happy: 336 transgender : 2
## $15000 - 19999: 61 DK : 0 a gender not listed here: 1
## lt $1000 : 33 IAP : 0 Don't know : 0
## (Other) : 169 NA : 0 (Other) : 0
## NA's :1033 NA's : 4 NA's :947
## wwwhr emailhr socrel
## Min. : 0.00 Min. : 0.000 sev times a week:382
## 1st Qu.: 3.00 1st Qu.: 0.000 sev times a mnth:287
## Median : 8.00 Median : 2.000 once a month :259
## Mean : 13.91 Mean : 7.152 sev times a year:240
## 3rd Qu.: 20.00 3rd Qu.: 10.000 almost daily :217
## Max. :140.00 Max. :100.000 (Other) :171
## NA's :986 NA's :929 NA's :792
## socommun numpets tvhours
## never :510 Min. : 0.000 Min. : 0.000
## once a month :243 1st Qu.: 0.000 1st Qu.: 1.000
## sev times a week:219 Median : 1.000 Median : 2.000
## sev times a year:196 Mean : 1.718 Mean : 2.938
## sev times a mnth:174 3rd Qu.: 2.000 3rd Qu.: 4.000
## (Other) :215 Max. :20.000 Max. :24.000
## NA's :791 NA's :1201 NA's :793
## major1 owngun
## business administration: 138 yes :537
## education : 79 no :993
## engineering : 54 refused: 39
## nursing : 51 DK : 0
## health : 42 IAP : 0
## (Other) : 546 NA : 0
## NA's :1438 NA's :779You have a set of questions that you would like to answer with a statistical test. For each question:
- Choose the most appropriate test.
- List and evaluate the assumptions for your test.
- Conduct your test.
- Discuss statistical and practical significance.