Blowfly Count Time Series. For the data in Example 2.6 it was postulated that a major transition in the dynamics of blowfly population size appeared to have occurred around day 400. This was...

Blowfly Count Time Series. For the data in Example 2.6 it was postulated that a major transition in the dynamics of blowfly population size appeared to have occurred around day 400. This was attributed to biological evolution, and the whole series cannot be considered as representative of the same system. Divide the time series into two data segments with in- dices 1–200 and 201–361. Calculate and compare the autocorrelation functions for the two segments.