SDS 306 Lecture Notes - Lecture 4: Pie Chart, Bar Chart, Frequency (Statistics)
25 Jan 2017
School
Department
Course
Professor
Document Summary
A bar chart displays the frequency or relative frequency of each category. All bars must have the same width. Good for general audience: frequency bar chart, relative frequency bar chart. A pie chart presents each category as a slice of a circle: so that each slice has a size that is proportion to, the whole in each category. Pie charts are also good for a general audience. Pie charts help to display the fraction of the whole that each category represents. Choose the chart that best tells the story of your data. Think about the intended audience to select a chart that is best for them. Charts work better when the categories do not overlap. Don"t try to fool your audience: provide a chart that honestly expresses the interesting features of the data. Assess two categorical variables for each member of the sample or population.
