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5. Data set wmurders contains the number of women murdered each year (per 100,000 standard population) in the United Sta
Posted: Thu May 05, 2022 8:08 pm
by answerhappygod
- 5 Data Set Wmurders Contains The Number Of Women Murdered Each Year Per 100 000 Standard Population In The United Sta 1 (48.49 KiB) Viewed 28 times
5. Data set wmurders contains the number of women murdered each year (per 100,000 standard population) in the United States. Consider the change in change of the series defined by y <- diff(diff(wmurders)) a. [3 marks] To fit an ARMA(p,q) model for the data, should you include a constant in the model? Explain. b. [4 marks] By studying appropriate graphs of the series in R and selecting models based on the corrected AIC, obtain an appropriate ARMA(p,q) model for the data. c. [3 marks] Examine the residuals of your selected model in part b. Is the model satisfactory? d. [4 marks] Write your fitted model. e. [4 marks] Create a plot of the series with forecasts and prediction intervals for the next ten periods.