Histogram versus time series plot - comparing them lets you understand what they are. The main idea is this: to define a plot, you have to say what you put on the vertical axis and what - on the horizontal axis. Many AP Statistics texts do not follow this definition format. As a result, students can only recognize a chart but cannot give its definition. This creates problems when a student need to answer a more substantive question.
Histogram versus time series plot - click to view video
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