We include the condition if rep78 > 2 to restrict our analysis to the subset of data where rep78 is greater than two. . regress mpg i.foreign i.rep78 i.foreign#i.rep78 if rep78 > 2 Number of obs = 59 Source SS df MS F(5, 53) = 6.10 Model 796.45951 5 159.291902 Prob >...
To delete a command in Stata, you should first open the Stata command window and type the “ edit ” command to open the Do-file Editor. From there, you can search and select the command you want to delete, then hit “ Ctrl + X ” or right-click the selection and select “Cut” ...
Since the datasets aren't sorted, we will need to open each dataset, sort it, and then save the sorted dataset. Although we can use the data from a website easily within Stata, we cannot save it there. So note that all of the use commands pull datasets from our website, but save ...
That’s why you’ll most likely want to use software for the test. InR, the format is [1] bartlett.test(x, …) ## Default S3 method: bartlett.test(x, g, …) ## S3 method for class ‘formula’ bartlett.test(formula, data, subset, na.action, …) ...
Missing data in covariates can result in biased estimates and loss of power to detect associations. It can also lead to other challenges in time-to-event analyses including the handling of time-varying effects of covariates, selection of covariates and t
Back to Top 3. Multiple Factor Analysis This subset of Factor Analysis is used when yourvariablesare structured in variable groups. For example, you might have a student health questionnaire with several items like sleep patterns, addictions, psychological health, or learning disabilities. ...
xtset panelvar timevar declares the data to be a panel in which the order of observations is relevant. When you specify timevar, you can then use Stata's time-series operators and analyze your data with the ts commands without having to tsset your data. xtset without arguments displays how...
Learn about factor analysis - a simple way to condense the data in many variables into a just a few variables.
Error subset data .txt How to add a counter to each group in dplyr How to add a counter to each group in dplyr Changing Base R code to dplyr/sparklyr Locator function getting stuck Ignore regular expression in grep pattern Viewing corrplot R^2 of regressed line fitted throug...
incdatafiltermarch <-subset(incdatafilter,incdatafilter$HFLAG != 0) # Only get data from March, sincethere were two surveys in 2014 # (Note, sometimes this info is hard to find - just poke around if things look 'off' and you'll get a feel for these surveys) ...