Histograms are used to graph univariate, quantitative data. We like to use these particularly when we have continuous data (data with decimals), but they can still be used for discrete data (whole numbers) as well.
NOTE: Histograms are NOT the same thing as a bar graph!! Bar graphs chart qualitative data while histograms chart quantitative data.
To make a histogram on the TI-84, enter your data into L1. Go to Stat Plot, turn the graph on, pick the one that looks like the histogram. Then press zoom - 9) Statistics.
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