5.2.2 Curve Fitting with Quadratic Models Key Objectives • Identify quadratic data. • Use quadratic functions to model data. Key Terms • A quadratic model is a quadratic function used to represent a set of data. Example 1 Identifying Quadratic Data Differences can be used to analyze patterns in data. For a set of ordered pairs with equally spaced x -values, a quadratic function has constant nonzero second differences.
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