Joke: The Vaccine and the experiment

A joke to help in a discussion of how a well designed experiment helps to reduce the variance of the response variable.  The Joke was written by Larry Lesser (The University of Texas at El Paso) and Dennis Pearl (Penn State University) in Februrary 2021.

Note - when the joke is spoken there is no need to say the parenthetical part - simply pronounce the word "variants" to sound like "variance".

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Larry Lesser & Dennis Pearl
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