Related Articles
t-test
The t-test uses the t-distribution (a sampling distribution of t) as a method of model comparison when you are evaluating a complex model against the empty model. It is very similar to using the F-distribution for model comparison, and, actually, ...
F-Distribution
The F-Distribution is a probability distribution that models the sampling distribution of F under the empty model (the null hypothesis that there is no effect of the explanatory variable); this theoretical distribution takes into account both model ...
f() or fVal()
The f() function (and, similarly, the fVal() function) will calculate the F value for a model. Example 1: Below are various methods for indexing the model in the argument of the f() function (they will all produce the same output). For any of these, ...
tally()
The tally() function will count, or tally, the number of cases that are observed in each category of a variable. Example 1: Use tally() to count the number of observations in each category of a categorical variable. # Use tally() to count the number ...
Try Again Button
A great way to study information is to test yourself on it. Research on testing has shown that testing can help solidify already learned information as well as prepare the brain for learning new information. To help you with this, CourseKata has a ...