# 6.5 Notes - Reading Graphs - Watch out for the small print...

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Section 3.1 Reading Graphs Bar graph : a graph with bars whose length is proportional to the values that they represent. The bars can be plotted vertically or horizontally. Bar charts are useful for plotting discrete data which is not continuous. Some examples of discrete data for which you might use a bar chart include number of people with given shoe sizes. Axes : the horizontal axis and vertical axis are labeled to show the items that are being compared.
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Unformatted text preview: Watch out for the small print! If it says car sales (in millions) then a bar that goes up to 3 means 3 million cards sold, not just 3 cars sold! Line graph : consists of a series of points connected by a line. It is created by connecting a series of points that represent individual measurements with line segments. A line chart is often used to visualize a trend in data over intervals of time and thus the line is often drawn chronologically....
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