5.50 Select a Mathematical Model.notebook
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November 18, 2019
Selecting a Mathematical Model
Warm Up
5.50 Select a Mathematical Model.notebook
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November 18, 2019
Select a Graphical Model
5.50 Select a Mathematical Model.notebook
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November 18, 2019
Select a Graphical Model
5.50 Select a Mathematical Model.notebook
4
November 18, 2019
Select a Graphical Model
Key Concepts• Data can be modelled graphically and algebraically.• The type of model that fits the data best can sometimes be determined from a scatter plot.• If first differences are constant, or almost constant, then a linear model is suitable. A linear model implies a constant increase or decrease over equal intervals.• If second differences are constant, or almost constant, then a quadratic model is suitable.• If ratios are constant, or almost constant, then an exponential model is suitable. An exponential model implies a constant percent increase or decrease over equal intervals.• Sometimes, more than one model appears to be suitable. To determine which model best fits the data, examine the coefficient of determination, r2, and extend the pattern in the table or the graph.
Homework: BLM 518 #s 1 5