POL SCI 137A Lecture Notes - Lecture 20: Confidence Interval, Null Hypothesis, Stata
13 Apr 2017
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Make a record of your outputs in stata. Create . log (tell it to open in word) You can keep saving to have stata memorize your recodes. You should download it with choice text - use recode to create numerical variables. dta - stata dataset (save stat data file) How to determine pass/ no pass for attention check tab ac. **say people were to pick responses 1 and 5 to pass attention check gen pass=0 replace pass=1 if ac== 1,5 tab pass. Tab1 _ _ _ (to tag multiple cariables) You expect all dependent variables to be positively correlated. Changing 7 point scale to -3 to 3 (neutral is 0) Crombach"s alpha - use if you use an index. Plus minus: subtract lower end of interval from upper end and then divide by two lower bound of confidence interval: mean minus the plus-minus. Upper bound of confidence interval: mean plus the plus-minus hypothesis.
