22.1 Graphical Displays of Data

  • Qualitative Data • Quantitative Data • Bar Graph • Pie Chart • Class • Frequency • Frequency Distribution • Relative Frequency • Histogram • Stem-and-Leaf Plot • Time Series Plot

There are many situations when we need to organize data so that important patterns can be seen and conclusions can be drawn. Statistics provides the tools for doing this. Statistics is the science of collecting, describing, and interpreting data. One important way of organizing data is by using statistical graphs. In this section, we will show some common graphs that are used to display data.

There are two main different kinds of data. Qualitative data are categorical in nature. Their values are nonnumeric, and they fit into one of ...

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