Cartoon: The Elevator II

A cartoon to be used in discussing the value of stratified sampling (or blocking in experiments) with diverse populations. The cartoon was used in the January 2017 CAUSE cartoon caption contest (see "The Elevator I" for the cartoon with the winning caption). This caption is a shortened version of a caption submitted anonymously to the contest. The cartoon was drawn by British cartoonist John Landers based on an idea from Dennis Pearl of Penn State University.
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John Landers
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