Refer to Table 4.3. a. Fit a Poisson loglinear model using both W = weight and C
Question:
a. Fit a Poisson loglinear model using both W = weight and C = color to predict Y = number of satellites. Assigning dummy variables, treat C as a nominal factor. Interpret parameter estimates.
b. Estimate E(Y) for female crabs of average weight (2.44 kg) that are (i) medium light, and (ii) dark.
c Test whether color is needed in the model.
d. The estimated color effects are monotone across the four categories. Fit a simpler model that treats C as quantitative and assumes a linear effect. Interpret its color effect and repeat the analyses of parts (b) and (c). Compare the fit to the model in part (a). Interpret.
Table 4.3:
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a log 502 546weight 452 C1 247 C2 002 C3 where C1 C2 C3 ...View the full answer
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