Frequencies for first 10,000 rows of fuelinj_t variable in vindecode dataset : the type of | fuel | injection | used by a | vehicle. for | example, | direct, | throttlebody | Freq. Percent Cum. -------------+----------------------------------- | 3,306 33.06 33.06 Common Rail | 14 0.14 33.20 Direct | 531 5.31 38.51 Multiport | 354 3.54 42.05 N/A | 44 0.44 42.49 Port | 13 0.13 42.62 Sequential | 750 7.50 50.12 Throttlebody | 3 0.03 50.15 Unknown | 4,985 49.85 100.00 -------------+----------------------------------- Total | 10,000 100.00 by Jean Roth , jroth@nber.org , 22 Oct 2016