Question

why we need graph ?
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Answer 1

Answer:

Graphs are a common method to visually illustrate relationships in the data. The purpose of a graph is to present data that are too numerous or complicated to be described adequately in the text and in less space. ... If the data shows pronounced trends or reveals relations between variables, a graph should be used.

Explanation:

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Answer 2

Explanation:

because graph is use in math and very important for this chapter data handling