ch1_4pp - 22s:152 Applied Linear Regression In statistics...

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22s:152 Applied Linear Regression Chapter 1: Introduction ———————————————————— All disciplines use models: physics F=ma sociology socioeconomic mental status health marketing house price = f (square footage) 1 In statistics, we use data to ±t models that include variability . Y = β 0 + β 1 x + error term 0 2 4 6 10 0 20 30 x y These ±tted models can be used to test hypotheses, or test if relationships exist. 2 In many situations, the model considered is a “grossly” simpli±ed description of a complex reality, for example. ..
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ch1_4pp - 22s:152 Applied Linear Regression In statistics...

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