findit xtserial Then click on the link to install from SSC (Statistical Software Components).
ssc install xtserial Or, if you prefer to install from the search results: install xtserial stata
Here's the text you can use to install xtserial in Stata: findit xtserial Then click on the link to
xtserial is a user-written command used to test for serial correlation in panel data models. install xtserial stata