MATH 1131 Lecture Notes - Lecture 2: Countable Set, Bar Chart, Categorical Variable
19 Oct 2017
School
Department
Course
Professor
Document Summary
Math 1131 lecture 2 notes- tables and graphs for summarizing data. If we measure, or record, two observations on each individual, the data set is bivariate. We might instead ask each person who arrives how long it took to reach the country club: these time the responses, for example, 10, 15, or 45 minutes, are numerical. A random sample of actresses attending the oscars was obtained, and the designer of each gown was recorded: the responses are given in the following table, each response is non-numerical, because there is no natural ordering. This is a (univariate) categorical data set: priority mail, the u. s. Postal service offers priority mail flat rate boxes with which customers can expect delivery within two days of packages weighing up to 70 pounds. Instead, suppose we record the barometric pressure, in millibars, at 4:00 p. m. The possible values are not discrete and isolated.
