You can email Catherine directly at cath@catherinechhood.net.

About Us

Catherine C.H. Hood has over 15 years experience providing support services for time series modeling and seasonal adjustment and in setting regARIMA models and seasonal adjustment options for production. Click here to view her full CV.

She has extensive experience in the following areas:

• Seasonal adjustment software - including a variety of packages, but particularly X-12-ARIMA and TRAMO/SEATS, the two most widely used seasonal adjustment programs in the world. Our experience is not only with running the programs for research and large-scale production, but also in knowing the methods behind the software and the diagnostics for seasonal adjustment.
• Statistical time series models - for forecasting and data exploration, including a wide range of models such as exponential smoothing models and regARIMA (ARIMA models with regression errors) models, using mathematical formulas to identify the patterns and trends and performing statistical tests on the results for reasonableness of the models.
• Benchmarking - using software and methods to ensure that data meets certain constraints, often temporal constraints.
• Price indices - including hedonic and fixed-weight indices, using Fischer, Laspeyres, and Passche formulas.
• Quality control - using time series techniques and statistical models to monitor data, improve data quality, and improve editing/imputation methods for possibly missing data. Having extensive experience in time series analysis gives us a unique perspective on quality control issues.

In the course of her career, Catherine has worked on several different surveys, with experience in large-scale data collection, price indexes, sample design, quality assurance, and editing and imputation. She has 7 years experience developing and teaching classes on time series and seasonal adjustment. She has completed extensive research in the area of seasonal adjustment, including direct versus indirect seasonal adjustment of aggregate series, model-based seasonal adjustment procedures and diagnostics, and benchmarking.

Catherine worked at the US Census Bureau for 13 years where she was the original developer of X-12-Graph and X-12-Write, and her interests still lie in programming, diagnostics, and graphics for time series and seasonal adjustment. After the Census Bureau, Catherine spent a year in Europe working on seasonal adjustment and benchmarking projects on contracts for Eurostat. Catherine is now back in the United States, where she is continuing her research and software interests in conjunction with colleagues at the Census Bureau. She is also teaching part-time at the university level.

Darin Hood also specializes in teaching, though not in the field of seasonal adjustment. Darin is a writer by trade, and he is part of the support system behind this company and web site.

For all projects, our team has a talent for communicating difficult concepts in a nontechnical way that everyone can understand and excellent communication skills, both orally and in writing.

Contact Information/The Blogs

Contact Catherine at cath@catherinechhood.net.
Contact Darin at darin@catherinechhood.net.
Contact our information desk at info@catherinechhood.net.

Darin and Catherine have several blogs about their experiences in Luxembourg and starting a new life back in the US.

• Seasonally Adjusting my Life
• How Not to Move to Luxembourg
• Three Beautiful Things in Tennessee

Last update: 25 September 2007