(3)Common data types Statistics jc real-valued (interval scale) floating-point real-valued (ratio scale) count data (usually non-negative) integer ●Integers, binary data Boolean categorical data enumerated type ●Booleans, random vector list or array random matrix two-dimensional array ●Characters,. random tree tree Floating-point numbers, Alpha numeric strings. 10 DATA Copyright 2019 by Xiaoyu Li.Copyright © 2019 by Xiaoyu Li. 10 (3) Common data types  Integers, Booleans, Characters, Floating-point numbers, Alpha numeric strings