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Calculate NPS from response counts with the working
- For Customer success managers
- You practice Catching mistakes and made-up facts
- Time about 5 minutes
- Level Beginner
About this exercise
Write exactly three lines starting "NPS:", "Change:" and "Detractors:". NPS shows the calculation like "(60 - 10) / 100 = 50". Change compares with last quarter. Detractors gives the share. Plain text, under 45 words.
Common mistakes when you ask AI for this
- Using the promoter count. The marketing draft says NPS is 60. Try: Say: "NPS = (promoters - detractors) / responses x 100."
- Missing the change. The AI gives NPS only. Try: Say: "Change: last quarter 42 to this quarter."
- Wrong layout. The AI adds the response rate and notes. Try: Name the three labels; nothing else.
- Getting markdown back. AI adds bold and headings by default, which show up as stray symbols where this is pasted. Try: Say "plain text, no bold, no headings, no asterisks".
- Trusting the AI to count words. AI is bad at counting and usually runs long, so a vague "keep it short" lands well over the limit. Try: Cap each part instead of the total, for example "each line under 15 words".
What a strong prompt includes
- Asks for plain text
- Sets a length limit
- States the formula
- Names the labels
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