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Quantitative Usability, Statistics & Six Sigma by Jeff Sauro



Statistics Questions & Answers

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# QuestionHelpful RatingTags
162 There is an answer for this Question I am trying to do A/B testing onweb page displays. One is the test the other is the control. Could you help me determine the formula for sample size at a 95% confidence level? My historical Conversion Rate (success): 11% Visitors: 280 per day I would like to see a 2% improvement in my conversion rate. 94.29Confidence Intervals, Control Chart, A/B Testing, p-chart