Minimum sample size for estimating the Net Promoter Score under a Bayesian approach
ELIARDO G. COSTA,
RACHEL TARINI Q. PONTE
Abstract:At some moment in our lives, we are probably faced with the following question:"How likely is it that you would recommend [company X] to a friend or colleague?". This question is related to the Net Promoter Score (NPS), a simple measure used by several companies as indicator of customer loyalty. Even though it is a well-known measure in the business world, studies that address the statistical properties or the sample size determination problem related to this measure are still scarce. We adopt a Bayesian appro… Show more
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