proj1 - STA 6167 – Project 1 Due THURsday 1/27/11 Part 1:...

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Unformatted text preview: STA 6167 – Project 1 Due THURsday 1/27/11 Part 1: Experiments on oysters A study was conducted to measure the effects of several factors on the growth of oyster shells the variables under study are: • Response: growth (mm in shell width) • Predictor 1:Food Concentration • Predictor 2: Flow speed The authors fit 2 models: Complete Model: ( 29 ( 29 Flow x Conc Flow Flow) ( conc) Food ( E(Width) * 2 * * * * 4 3 2 1 β β β β β + + + + = Source df SS Regression 4 101.68 Residual 15 37.35 Total 19 139.03 Parameter Estimate Standard error Intercept 0.96 n/a Food conc 2.52 0.785 Flow 1.72 0.595 Flow 2-0.10 0.064 Conc x flow-0.19 0.204 Reduced Model Flow) ( conc) Food ( E(Width) * * 2 * * * * 1 β β β + + = Source df SS Regression 2 93.33 Residual 17 45.70 Total 19 139.03 Parameter Estimate Standard error Intercept 2.41 n/a Food conc 1.98 0.549 Flow 0.67 0.144 For each model, give the fitted value (prediction) when food conc=8 and flow=2.5For each model, give the fitted value (prediction) when food conc=8 and flow=2....
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This note was uploaded on 01/22/2012 for the course STA 6167 taught by Professor Staff during the Fall '08 term at University of Florida.

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proj1 - STA 6167 – Project 1 Due THURsday 1/27/11 Part 1:...

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