Related Articles
Five-Number Summary
The five-number summary is a handy way to describe the spread of a distribution around its median. To calculate the five-number summary, we first sort the data points from smallest to largest along the scale on which the variable is measured. Next we ...
favstats()
The favstats() function will compute a set of common summary statistics ("favorite stats") for a given variable, including the five-number summary (minimum, Q1, median/Q2, Q3, maximum), the mean, the standard deviation, the sample size (n), and the ...
What are the boxes and whiskers in a boxplot?
What are the boxes and whiskers in a boxplot? We use boxplots to show the distribution of data mainly through four quartiles (Q1, Q2, Q3, Q4). The boxplot has two whiskers (Q1, Q4), two smaller boxes (Q2, Q3) and a larger central box (Q2, Median, Q3) ...
ntile()
The ntile() function can be used to create equal sized groups (n-tiles) out of a quantitative variable. It can be modified to make any number of groups. For instance, if you take a quantitative variable such as Height from the Fingers data frame, you ...
Appendix of Videos in Course Textbook
These are the instructional videos that appear throughout the course textbook. Title Link What is Between Group vs Within Group Variation? Transcript https://player.vimeo.com/video/379060892 How to Tell if One Variable "Explains Variation" in ...