ECON 2200 Chapter Notes - Chapter 2: Bar Chart, Pie Chart, Frequency Distribution
14 Jan 2017
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Document Summary
Frequency table a grouping of qualitative data into mutually exclusive classes showing the number of observations in each class. Class frequency the number of observations in each class. Relative class frequency shows the fraction of the total number of observations in each class. Captures the relationship between a class total and the total number of observations. Bar chart most common graphic form to present a qualitative variable. Graphically describes a frequency table using a series of uniformly wide rectangles. Horizontal axis shows the classes corresponding to the variable of interest. Vertical axis shows the frequency or relative frequency of each of the possible outcomes. A distinguishing characteristic of a bar chart is that there is a distance or gap between the bars. Pie chart another type of chart that is useful for depicting qualitative information. Graphically describes a frequency table using a circle that is divided into slices.
