This tutorial explains how to conduct an ANCOVA (analysis of covariance) in R. What is an ANCOVA? To understand the ANCOVA, it first helps to…

# Category: Uncategorized

Suppose we have the following vector that is of the class factor and has 10 elements: #make this example reproducible set.seed(0) #create factor vector with 10…

This tutorial explains how to conduct a MANOVA (multivariate analysis of variance) in R. What is a MANOVA? To understand the MANOVA, it first helps…

In statistics, we’re often interested in understanding how a particular variable is distributed in a dataset. One common way to visualize the distribution of a variable…

Similar to boxplots, violin plots are used to visualize the distribution of continuous data. Unlike boxplots, though, violin plots show the kernel probability density of…

An ANOVA is a statistical test that is used to determine whether or not there is a statistically significant difference between the means of three…

Similar to a bar chart, a lollipop chart is useful for comparing the quantitative values of a categorical variable. Instead of using bars, though, a lollipop chart…

This calculator finds the t-Score associated with a given degrees of freedom and confidence level. Enter the degrees of freedom and the confidence level in…

The standard deviation is a common way to measure how “spread out” data values are. In statistics, the standard deviation is often referred to as…

This tutorial explains how to count the number of elements that are equal to specific values in vectors and data frames in R. Counting Elements…