Starbucks Baristas: The daily grind
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Warning math ahead (self.starbucksbaristas)
submitted by colonade17
So I've been thinking a lot about customer connection scores, and how accurately they reflect what customers actually think. If you've taken statistics you've probably had to calculate a margin of error.
So here are some hypothetical numbers to make the math easy that are roughly similar to reality:
Suppose a store has 10,000 customer transactions in a week. of those 50% use the app, so only those people are able to even get a survey. Among the survey eligible group there are 100 responses. so if we assume a 95% confidence level that means a 2% margin of error, but with different realistic assumptions I think we could be up to a 7% margin of error.
This is a little simplified but what are your thoughts?
So here are some hypothetical numbers to make the math easy that are roughly similar to reality:
Suppose a store has 10,000 customer transactions in a week. of those 50% use the app, so only those people are able to even get a survey. Among the survey eligible group there are 100 responses. so if we assume a 95% confidence level that means a 2% margin of error, but with different realistic assumptions I think we could be up to a 7% margin of error.
This is a little simplified but what are your thoughts?
doe_skin 17 points 3y ago
I think the survey itself is designed to fail as a tool of measurement (to keep stores on their toes.) If N/A scores are counted as zeros, I feel it cannot reliably reflect the actual experience it sets out to measure.
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