Frequencies for first 10,000 rows of turbo variable in vindecode dataset : indicates | if the | engine has | a | turbocharge | r. | Freq. Percent Cum. ------------+----------------------------------- | 7,515 75.15 75.15 I | 10 0.10 75.25 N | 1,960 19.60 94.85 U | 1 0.01 94.86 Y | 514 5.14 100.00 ------------+----------------------------------- Total | 10,000 100.00 by Jean Roth , jroth@nber.org , 22 Oct 2016