Observation and Audit Techniques for Measuring Retail Sales
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Over the last few years several groups have experimented with the use of "observation"
techniques for measuring the retail movement of fresh produce during a short period
of time—a few days or a week. Some investigators have stated that the observation
technique offers unique statistical as well as collection advantages. The present investigation
was undertaken to compare the relative efficiency of the observation technique
with the standard retail audit method, and to develop an efficient system of using
observation techniques for measuring retail sales. This study, involving only apples
and pears, was conducted in Philadelphia by Audits and Surveys Company, Inc., under
contract with the Agricultural Marketing Service.