tiernanmartin / NeighborhoodChangeTypology

Project: Neighborhood Change Typology for King County, WA
Other
4 stars 2 forks source link

Use forecasting + seasonal adjustment for SALE_RATE ? #18

Open tiernanmartin opened 5 years ago

tiernanmartin commented 5 years ago

Zillow uses a seasonal adjusted forecasting method (X-12-Arima) to account for the reporting lag in home sale data. Methodology details here.

If SALE_RATE is calculated for time series period shorter than a quarter then it may be useful to consider making this adjustment.