Say you want to identify clusters in a scatterplot of points. K-Means is commonly used method that might get you there. Yi Zhe Ang explains how the method works with a visual and interactive essay.
K-Means clustering visually explained
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What to Call Your Distant Relative
When you have a big family, it’s a challenge to figure out how everyone is related. So here are some charts to help you figure it out.
Marital Status by Age
Separately, we looked at marrying age, divorce rates, and those who never married. Now let’s look at marital status all together, with the addition of the widowed status.
States with the most and fewest firearms murders
According to 2009 numbers reported by the Federal Bureau of …