A graph is a picture that shows information using lines, bars, or other marks so you can see patterns and comparisons easily. To graph something means to put data into this kind of picture.
“Graph” comes from Greek “graphein,” meaning to write or draw. It originally referred to written records and diagrams, then narrowed to visual displays of data.
A good graph can reveal patterns that are almost invisible in a list of numbers. It turns math into a picture, letting your eyes do the thinking your brain would struggle to do with raw data.
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