Questions tagged [sas]
SAS is a statistical software package. Use this tag for any on-topic question that (a) involves SAS either as a critical part of the question or expected answer, & (b) is not just about how to use SAS.
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R vs SAS, why is SAS preferred by private companies?
I learned R but it seems that companies are much more interested in SAS experience. What are the advantages of SAS over R?
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Is there an R equivalent of SAS PROC FREQ?
Does anyone know of an R equivalent to SAS PROC FREQ?
I am trying to generate summary descriptive statistics for multiple variables at once.
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Out-of-core data analysis options
I have been using SAS professionally for close to 5 years now. I have it installed on my laptop and frequently have to analyze datasets with 1,000-2,000 variables and hundreds of thousands of ...
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Resources for an R user who must learn SAS
I use R. Every day. I think in terms of data.frames, the apply() family of functions, object-oriented programming, vectorization, and ggplot2 geoms/aesthetics. I just started working for an ...
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Formula for autocorrelation in R vs. Excel
I am trying to figure out how R computes lag-k autocorrelation (apparently, it is the same formula used by Minitab and SAS), so that I can compare it to using Excel's CORREL function applied to the ...
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Conflicting results of Type III sum of squares in ANOVA in SAS and R
I'm analyzing data from an unbalanced factorial experiment both with SAS and R. Both SAS and ...
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Open source Java library for statistics at the level offered by a graduate statistics course
I am taking a graduate course in Applied Statistics that uses the following textbook (to give you a feel for the level of the material being covered): Statistical Concepts and Methods, by G. K. ...
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Why does SAS PROC GLIMMIX give me VERY different random slopes than glmer (lme4) for a binomial glmm
I am a user more familiar with R, and have been trying to estimate random slopes (selection coefficients) for about 35 individuals over 5 years for four habitat variables. The response variable is ...
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Differences between PROC Mixed and lme / lmer in R - degrees of freedom
Note : this question is a repost, as my previous question had to be deleted for legal reasons.
While comparing PROC MIXED from SAS with the function lme from the <...
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What would a confidence interval around a predicted value from a mixed effects model mean?
I was looking at this page and noticed the methods for confidence intervals for lme and lmer in R. For those who don't know R, those are functions for generating mixed effects or multi-level models. ...
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Beyond AR(1) as a covariance structure for mixed models with repeated measures
I have been reading about alternatives to assuming an AR(1) covariance structure for mixed models with repeated measures (in time). In particular I have heard about Toeplitz and Ante-dependence ...
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Using computer simulations to better understand statistical concepts at the graduate level
Hi I'm taking a graduate course in Statistics and we've been covering Test statistics, and other concepts.
However, I am often able to apply the formulas and develop a sort-of intuition on how stuff ...
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testing logistic regression coefficients using $t$ and residual deviance degrees of freedom
Summary: Is there any statistical theory to support the use of the $t$-distribution (with degrees of freedom based on the residual deviance) for tests of logistic regression coefficients, rather than ...
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Which is the best method for network meta-analysis?
There are now several different approaches to perform a network meta-analysis or mixed treatment comparison.
The most commonly used and accessible ones are probably the following:
in a Bayesian ...
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What exactly is the Box-Jenkins method for ARIMA processes?
The Wikipedia page says that Box-Jenkins is a method of fitting an ARIMA model to a time series. Now, if I want to fit an ARIMA model to a time series, I will open up SAS, call ...
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