bluebirdlite contains log sales and prices for the “lite” version of bluebird chips. Quantify the relationship between sales and price.
In class we looked a modelling the relationship between mortality, temperature and particulate matter. Repeat the analysis but seasonally difference all three series first. Compare the results.
You can get the
part times series with:
Have a look at the code from Feb 9 if you want to turn them into a data frame.