This chord diagram of correlations between tattoo subjects measures how often convicts with a tattoo of one subject also have a tattoo of another subject. Each pair of subjects must occur at least twenty times. Darker lines indicate the strongest correlations, so, for example, convicts with a love tattoo are disproportionately likely to have a tattoo on a religious subject, and those with a nature subject are also likely to have a tattoo expressing national identity. Conversely, the light lines between love and astronomy, and military and nature, indicate these tattoos were relatively rarely collocated on the same convict.
Credit: Sharon Howard
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