"Statistics are like bikinis. What they conceal is more important than what they reveal."
A cricket as a thermometer
Believe it or not, but based on the number of chirps per minute, a Snowy Tree Cricket (Oecanthus fultoni) can tell you how hot or cold it is.
The underlying fundamental equation was formulated by professor of physics Amos Emerson Dolbear (1837-1910) of Tufts University in Medford, Massachusetts (USA) and published in 1897 in an article called "The Cricket as a Thermometer."