Stata Summary By Group. Statistics summaries tables and tests summary and descriptive statistics summary statistics description summarize calculates and displays a variety of univariate summary statistics. Summary statistics reported separately for each level of catvar by catvar.
Tapply data x data group summary summary by group using tapply a min. More precisely i m using the tapply function. If there were three oldid 1 observations followed by two oldid 2 observations in the dataset n would take on the values 1 2 3 1 2.
If there were three oldid 1 observations followed by two oldid 2 observations in the dataset n would take on the values 1 2 3 1 2.
It is the most widely used measure of central tendency. It is the most widely used measure of central tendency. Mean this is the arithmetic mean across the observations. Tapply data x data group summary summary by group using tapply a min.
