5.1 Descriptive Statistics: Some popular Displays of Data
5.1.1 Organizing Qualitative Data
Frequency and Relative Frequency Tables
A frequency distribution lists each category of data and the number of occurrences for each category
The relative frequency is the proportion (or percent) of observations within a category.
A relative frequency distribution lists each category of data together with the relative frequency of each category.
Bar Graphs / Bar Charts
- heights can be frequency or relative frequency
- bars must not touch
|favorite color||relative frequency|
1.should always include the relative frequency
2.also should include labels, either directly or as a legend