SAS

Generalized inverses for matrices

November 21, 2018
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A data analyst asked how to compute parameter estimates in a linear regression model when the underlying data matrix is rank deficient. This situation can occur if one of the variables in the regression is a linear combination of other variables. It also occurs when you use the GLM parameterization

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Immunization rates in North Carolina schools

November 20, 2018
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I recently read an article that said a school in Asheville, North Carolina had the worst chickenpox outbreak in the state in 2 decades. The article was interesting, and it also let me know I had a hole in my knowledge ... "What?!? - There's a chickenpo...
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Select ODS tables by using wildcards and regular expressions in SAS

November 19, 2018
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You might know that you can use the ODS SELECT statement to display only some of the tables and graphs that are created by a SAS procedure. But did you know that you can use a WHERE clause on the ODS SELECT statement to display tables that match a pattern?

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Create random number using call ranuni

November 16, 2018
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retain seed 111618; call ranuni(seed, ranno);
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SAS Press Is Recruiting Authors!

November 16, 2018
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Learn how to become an author with SAS Press. The post SAS Press Is Recruiting Authors! appeared first on SAS Learning Post.
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Where do provisional ballots come from?

November 15, 2018
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There has been a lot of controversy surrounding this year's midterm election, when it comes to counting the ballots ... and I kept hearing the term provisional ballots in the news. But I'm embarrassed to say that I didn't really know much about provisi...
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Building a better election map

November 14, 2018
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The US 'midterm' elections have finally started to wind down, and we finally have some (mostly) finalized results to study. But what's the best way to visualize who won the US congressional seats in each of the 435 districts? Let's dive into this topic...
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Create newline-delimited JSON (or JSONL) with SAS

November 14, 2018
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Create newline-delimited JSON (or JSONL) with SAS

JSON is a popular format for data exchange between APIs and some modern databases. It's also used as a way to archive audit logs in many systems. Because JSON can represent hierarchical relationships of data fields, many people consider it to be superior to the CSV format -- although it's

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