How Valid Is That Survey?
Tuesday, January 13th, 2009Telephone survey
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research: validity
LOOKING FOR REALITY
One of the biggest challenges in business is understanding our markets. We often choose to conduct research to get a better handle on market trends, demand, expectations, satisfaction, etc.
There are multiple types of errors in the data we gather. The easiest to quantify and the one most often discussed is sampling error.
Let’s assume we can draw a random sample from your population. But how big a sample do we need to have confidence in our results?
A SIMPLE EXAMPLE