1 2 in many situations the model considered is a

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Unformatted text preview: ● ● 0 ● ●● ● ● ● ● ● ● ● ●● ● y socioeconomic → mental status health ● ● ● ● ● ● ● • sociology ● ● ● ● −10 ● • marketing house price = f (square footage) ● 0 2 4 6 x These fitted models can be used to test hypotheses, or test if relationships exist. 1 2 In many situations, the model considered is a “grossly” simplified description of a complex reality, for example... ￿ ￿ mental health socio = β0 + β1 economic + error term status ↑ lots of things in this error... genetics, state lived-in, etc. ● ● ● Types of Studies • Retrospective (based on past records) • Observational - This may establish a ‘relationship’ • Experimental -...
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This note was uploaded on 06/12/2013 for the course MATHEMATIC MAT7870 taught by Professor Sun during the Winter '13 term at Wayne State University.

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