STAT 201 Study Guide - Midterm Guide: Quartile, Interquartile Range, Pie Chart
11 Oct 2018
School
Department
Course
Professor
Document Summary
Nominal data: name can be expressed as a pie chart. Also called binary or dichotomous (yes or no) Ordinal data means order (both nominal and ordinal can be bar graphs) Interval/numeric/ quantitative data- anything that is a measureable quantity is numeric is numeric data (quantity) types of numeric: Continuous data: can take on any value in a fluid continuous region. Ratio data- similar to interval data (births per capita) Histogram- lack of gaps emphasizes the evenly spaces categories that cover all the values in a range. Frequency distribution- shows the number of observations in a particular range or of a pa(cid:396)ti(cid:272)ula(cid:396) (cid:448)alue (cid:862)ho(cid:449) ofte(cid:374)(cid:863) Mode- a local high point or maximum in a distribution (one mode- unimodal, two- bimodal- usually two distinct populations being measured) No(cid:373)i(cid:374)al (cid:272)a(cid:374)t (cid:271)e(cid:272)ause (cid:455)ou (cid:272)a(cid:374)(cid:859)t o(cid:396)de(cid:396) it i(cid:374) anyway. Skew- (draw +/-) skew is where the extreme values are. Mean- (total of all observed values)/ (number of values observed) sensitive to outliers.
