When you buy a lottery ticket, how much is it worth to you? Is the giant jackpot the main draw, or do you find the other prizes alluring? Using expected utility, we can see that tickets are worth much less than you may already think.

Color is an important aspect of any visualization. Often, readability is sacrificed for simplicity or aesthetics, even though it is not necessary. Here I demonstrate some examples of how to use and improve visualizations via choice of colors and color palettes.