Thank you for working on this case. The article is comprehensive without being too much but more graphs could have made it more convincing. The work done on the subject may not have given the answers we were looking for but it is a good starting point and was exposed in a good manner.

Thank you for working on the NSI case!
You are saying that the TS linear model is better but for example from the “food and non-alcoholic expenditures” graph it can be seen a lost of seasonality which can be crucial when calculating consumer price indicies. It would be better if you provided predicted vs expected values for some kind of error estimation. Otherwise the article is readable, friendly and shows dedication and understanding of a certain level of the subject.