This dataset was taken from the list of OpenIntro dataset files found at https://www.openintro.org/data/.
OpenIntro features a number of free books that can be used in high school and AP statistics courses. The license on these datasets is currently unknown. You can find out more about OpenIntro at https://www.openintro.org.
These are the core colors used for the OpenIntro Statistics textbook. Theblue, green, yellow, and red colors are also gray-scaled, meaning no changesare required when printing black and white copies.
matrix of 7 colors with four fading scales: blue,green, yellow, red, black, gray, and light gray.}
Colors selected by OpenIntro's in-house graphic designer,Meenal Patel.
Taken from: https://www.openintro.org/data/index.php?data=COL.