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Author Archives: Chang
Popularity of Data Analysis Software
Robert A. Muenchen wrote a useful book, R for SAS and SPSS Users. He also authors a blog entry that he updates regularly, where he presents various ways of measuring the popularity or market share of data analysis software such … Continue reading
Posted in Data Management, Software
Tagged Software Popularity
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Data Life Cycle
I have been collecting diagrams depicting the concept of Data Life Cycle (or Data Lifecycle) for some time. Merriam-Webster’s online dictionary (2012) defines “life cycle” (the third meaning) as: “a series of stages through which something passes during its lifetime.” … Continue reading
Let’s Keep the Virtuous Circle Going
One way to understand the concept of the “Data Life Cycle” is to realize that there is a virtuous circle going between data and research findings: new data beget new findings and the new findings, new data collection, all the … Continue reading
Firm Data User Support for the Fragile Families Study
For nearly 15 years now, researchers at Princeton and Columbia Universities have been collecting data from 20 cities on the lifestyles, health, and wellbeing of unmarried parents and their children. This ongoing project, known as the Fragile Families and Child … Continue reading
Posted in Data
Tagged Fragile Families, User Support
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Demography Volume 48
All four issues of Demography volume 48 (2011) are now published. As a data person, I am interested in the data the authors used for their research. Below is my attempt at summarizing what I have found out by reading … Continue reading
10,000
On the evening of October the 3rd, the ten thousandth user* registered to access the OPR Data Archive. This is not as momentous as the world’s population reaching 7 billion people, but it is a moment to celebrate, nonetheless. The user … Continue reading
Learning Stata
Each fall, around the beginning of a new school year, Chang gets a question about learning Stata, one of our fully supported statistical analysis software applications. How can I learn Stata fast and use it efficiently? Here are some starting … Continue reading
