STAT 3006 Lecture Notes - Lecture 13: Pie Chart, Bar Chart, Count Data
14 Oct 2018
School
Department
Course
Professor
Document Summary
Two variables are associated if knowing the value for one variables gives you information about the value for the other. This is often discussed as a response variable against an explanatory variable. A response variable (x-axis) measures the outcome of interest (the outcome of the study), while an explanatory variable (y-axis) is the variable thought to explain the response (the causes or changes in the response variable). They provide a simple graphical basis for evaluating the extent of association. Records which of several groups an individual belongs to. Count data in each group, but you logically should not average it. Graphing is best illustrated with a pie chart (or bar graph) Includes values for which it makes sense to do operations like adding, totaling, and averaging. Graphing is best illustrated with a bar chart. The result of counting outcomes rather than measuring them: example: golf score, number of days it rained, number of customers.
