Descriptive Statistics in R

The following notes cover the use of R to create measurements of central tendency: mean(), median() and mode(), as well as the spread of data through range, IQR (inter-quantile-range) and standard deviation. Finishing the notes is some useful visualizations for this work, including standard R graphic functions, as well as ggplot graphs. Code Show All … Read moreDescriptive Statistics in R

Testing for Normal Distribution

A lot of online statistics courses make use of generated data that follows a normal distribution. This is great for a basic understanding of the normal distribution, but it doesn’t help with real world data. Even if the histogram for some data appears to be normally distributed, we really don’t have evidence it’s normally distributed. … Read moreTesting for Normal Distribution