What is the Bar Graph Activity?

The Bar Graph applets allow the user to graphically display data frequency using a bar graph. This particular applet allows the user to enter his/her own data as well as manipulate the y-axis values. The ability to manipulate the y-axis values allows the creation of potentially misleading graphs.

Bar graphs similarly to histograms are graphical data representations based on frequency. Histograms are a type of bar graph. The feature which distinguishes a histogram from a bar graph is that the each bar on a histogram represents a range of data, where each bar on a bar graph represents a specific category. For example:



In this bar graph each bar represents a specific part of this student's day, while the y-axis shows the number of hours.



In this histogram each bar represents a 19.1 point range of SAT scores.

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