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NPS Statistics Spreadsheet
Calculate the margin of error and confidence interval on your Net Promoter Score so you know whether a movement is signal or noise.

What's inside
- Calculates margin of error for any NPS at any sample size
- Tells you whether a month-on-month NPS movement is statistically real
- Pairs side-by-side scores so you can compare segments without guessing
- Includes the working so you can audit the maths or explain it to a sceptical executive
“We first began working with Genroe to streamline and refine our Net Promoter Score program. I can not promote Genroe enough, they have gone above and beyond in helping us and have delivered a flexibility to our program that really suits out needs.”
Renee Farnham
nib Health Funds
Who it's for
- Analysts settling monthly debates over whether a 2-point NPS dip is real
- Programme managers needing to justify which score movements to act on
- CX leaders comparing segment scores without falling for small-sample noise