Identify any potential problems with the model

Assignment Help Basic Computer Science

Reference no: EM131241209

Agresti (2007) provides data on the social behavior of horseshoe crabs. These data are contained in the HorseshoeCrabs.csv file available on our website. Each observation corresponds to one female crab. The response variable is Sat, the number of "satellite" males in her vicinity. Physical measurements of the female-Color (4-level ordinal), Spine (3-level ordinal), Width (cm), and Weight (kg)-are explanatory variables.

(a) Fit a Poisson regression model with a log link using all four explanatory variables in a linear form. Test their significance and summarize results.

(b) Compute deviance/df and interpret its value.

(d) Carry out the GOF test described on page 296 using the PostFitGOFTest() function available in the Post Fit GOF Test. R program of the same name from our website. Use the default number of groups. (M/5 when M ≤ 100)

i. State the hypotheses, test statistic and p-value, and interpret the results.

ii. Plot the Pearson residuals for the groups against the interval centers (available in the pear.res and centers components, respectively, of the list returned by the function). Use this plot and the residual plots from part (c) to explain the results.

Reference no: EM131241209

Questions Cloud

What is expected return and volatility for a 10 year bond : What is the real world process for r? - What is the expected return and volatility for a 10-year bond in the risk-neutral world?

Write a report summarizing the concepts of ifrs : Write a 4 page report summarizing the concepts of IFRS and international accounting issues as they relate to your McDonald's. I do not expect you to quote from sources but to write what you learned about your McDonald's.

Globally food price has increased during the past year : Globally food price has increased during the past year. It is in this context answer the following questions: Explain why the law of demand applies to food just as it does to all other goods and services.

Difference between a markov and a non markov model : Explain the difference between a Markov and a non-Markov model of the short rate. - Prove the relationship between the drift and volatility of the forward rate.

Identify any potential problems with the model : Plot the Pearson residuals for the groups against the interval centers (available in the pear.res and centers components, respectively, of the list returned by the function). Use this plot and the residual plots from part (c) to explain the result..

Project for social sustainability for medical supplier : ANOVA to analyze the results. I am facing problem with the results, the PDF file ANOVA shows the steps that I have to follow in order to get the results.

What is the advantage of lmm over hjm : What is the advantage of LMM over HJM? - Provide an intuitive explanation of why a ratchet cap increases in value as the number of factors increase.

Estimate the gi odds ratio for a 1-unit difference in scores : Estimate the GI odds ratio for a 1-unit difference in scores. Interpret what this measures and find the Wald confidence interval for the estimate.

Tangential speed of the satellite : A man-made satellite orbits the earth in a circular orbit that has a radius of 10000 km. The mass of the Earth is 5.97e+24 kg. What is the tangential speed of the satellite?

User Account

All Pages