Blogs

Learn SAS

Learn about the latest tips, tutorials, upcoming events and certifications

Analytics | Learn SAS | Programming Tips

Rick WicklinNovember 6, 2023 0

Standard errors for maximum likelihood estimation

In several previous articles, I've shown how to use SAS to fit models to data by using maximum likelihood estimation (MLE). However, I have not previously shown how to obtain standard errors for the estimates. This article combines two previous articles to show how to obtain MLE estimates and the

English

Learn SAS | Programming Tips

Rick WicklinNovember 1, 2023 0

The distribution of the sample median for normal data

A previous article shows how to use Monte Carlo simulation to approximate the sampling distribution of the sample mean and sample median. When x ~ N(0,1) are normal data, the sample mean is also normal, and there are simple formulas for the expected value and the standard error of the

English

Learn SAS | Programming Tips

Rick WicklinOctober 30, 2023 0

The distribution of the sample median

An elementary course in statistics often includes a discussion of the sampling distribution of a statistic. The canonical example is the sampling distribution of the sample mean. For samples of size n that are drawn from a normally distribution (X ~ N(μ, σ)), the sample mean is normally distributed as

English

Previous 1 … 43 44 45 46 47 … 410 Next