Selected data from Sheridan Corporation's year-end financial statements are presented below.The difference between average and ending inventory is immaterial.There were no prepaid expenses. 
Sheridan's sales for the year were:
Definitions:
Experiments
A method of scientific investigation involving manipulation of variables to test a hypothesis and observe effects on a controlled environment or group.
Control Group
In an experiment, a comparison group of participants that does not receive the experimental treatment.
Variable Group
A set of elements or entities that are subject to change and can be measured and analyzed within a study.
Confound Group
A group in an experiment that introduces variability to the outcome, making it difficult to determine the effect of the treatment.
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