Use a trend and periodic model to fit the monthly Boston armed robberies data (“Boston robberies.txt” in the Exercises folder or DataMarket–TSDL–Crime–Monthly Boston armed robberies January...

Use a trend and periodic model to fit the monthly Boston armed robberies data (“Boston robberies.txt” in the Exercises folder or DataMarket–TSDL–Crime–Monthly Boston armed robberies January 1966–October 1975). Use model selection and filtering to find the best model. When are the low and high months for armed robberies? How much are armed robberies increasing per month?