In this experiment, mulberries were harvested from an experimental variety being grown on seven different farms. 250 berries were harvested from each farm and divided into five random groups of 50 berries each. Five different storage temperatures (6, 10, 14, 18, and 22 °C) were randomly assigned among each of these groups of 50 berries from each farm. After two weeks in storage, firmness was measured on all berries with a digital firmness tester as a means of evaluating post-harvest quality. The mean firmness for each batch of 50 berries is used in this analysis.

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Graph to show variable distribution