Catherine Hood Consulting

Welcome to Catherine Hood Consulting

We specialize in solutions to statistical time series problems, particularly in seasonal adjustment and forecasting.

Seasonal adjustment help is just a click away!

Frequently Asked Questions about time series and seasonal adjustment
Papers on seasonal adjustment
Services offered by Catherine Hood Consulting
Our Short Courses

Our latest news is available here!

Do you have questions not answered here?

Please email our information desk at info@catherinechhood.net
or email Catherine directly at cath@catherinechhood.net.

Time Series is What We Do

What is a time series? It's any sequence of measurements of a given phenomenon taken at regular time intervals.

Time series are important in a variety of disciplines, such as economics, epidemiology, and geology. Some features of a time series that could be of interest are direction, turning points, and consistency between time series (economic indicators, for example). However, sometimes seasonal movements can make these features difficult to see. Therefore, when analyzing subannual time series data, it is a very common practice to identify and often remove seasonal patterns to make the series easier to interpret.

Identifying seasonal patterns is also useful when forecasting a time series to build seasonal movements into the forecasts.

Our Services

We believe that it is important for anyone involved with seasonally adjusted series to recognize and understand the various movements present in time series and to understand the various components of a time series (such as the trend) that are estimated during seasonal adjustment. For that reason, we gladly offer help and advice to people involved in seasonal adjustment. For clients who need a consistent source of help and information, we offer a subscription service to our information desk services. Catherine also teaches a wide range of courses on the subject. More information on courses and other services can be found on the Services page.

In addition to the courses, we also offer consulting on seasonal adjustment. Do you have a time series that you would like to have seasonally adjusted? Do you need help to set up options for the various types of seasonal adjustment software available? We can help.

Catherine has over 15 years of experience in providing support services for time series modeling and seasonal adjustment and in setting regARIMA models and seasonal adjustment options for production. She has extensive experience in seasonal adjustment software (particularly X-12-ARIMA and TRAMO/SEATS), statistical time series models, forecasting, benchmarking, price indices, and quality control. More information on Catherine's experience is found on the "About Us" page.

We are driven by a focus on our customers, working to deliver quality, tested products that are beyond expectations, anticipating needs and responding to requests when needed. Our experience is not only with finding proper methods, but also in putting the methods into production. We believe that solutions to your specific problems mean solutions that can be used in practice and in production, not just a research report.

Short of taking a course, how can you learn more about seasonal adjustment? Check out our Frequently Asked Questions (FAQ) and papers pages. We also have some links to free seasonal adjustment software.

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Last update: 25 September 2007