Posts Tagged ‘ Bootstrap and Resampling ’

Sample without replacement in SAS

February 3, 2014
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Sample without replacement in SAS

Last week I showed three ways to sample with replacement in SAS. You can use the SAMPLE function in SAS/IML 12.1 to sample from a finite set or you can use the DATA step or PROC SURVEYSELECT to extract a random sample from a SAS data set. Sampling without replacement
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How to compute p-values for a bootstrap distribution

November 2, 2011
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I was recently asked the following question: I am using bootstrap simulations to compute critical values for a statistical test. Suppose I have test statistic for which I want a p-value. How do I compute this? The answer to this question doesn't require knowing anything about bootstrap methods. An equivalent
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Ranking with Confidence: Part 2

March 30, 2011
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Ranking with Confidence: Part 2

In a previous post, I described how to compute means and standard errors for data that I want to rank. The example data (which are available for download) are mean daily delays for 20 US airlines in 2007. The previous post carried out steps 1 a...
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Ranking with Confidence: Part 1

March 25, 2011
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Ranking with Confidence: Part 1

I recently posted an article about representing uncertainty in rankings on the blog of the ASA Section for Statistical Programmers and Analysts (SSPA). The posting discusses the importance of including confidence intervals or other indicators of ...
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Resampling and Simulating My Grocery Bills

November 19, 2010
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Resampling and Simulating My Grocery Bills

In a previous post, I used statistical data analysis to estimate the probability that my grocery bill is a whole-dollar amount such as $86.00 or $103.00. I used three weeks' grocery receipts to show that the last two digits of prices on items that...
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