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Calculate trial conversion by window, excluding open trials
- For Revenue operations
- You practice Catching mistakes and made-up facts
- Time about 5 minutes
- Level Intermediate
About this exercise
Calculate September trial conversion. Write exactly 3 plain-text lines: "14-day: X of Y = Z%", "30-day: X of Y = Z%", and "Excluded: [what and how many]". One decimal. The 30-day count includes everyone who converted in 14 days. Do not count trials that are still open in the denominator. Under 50 words.
Common mistakes when you ask AI for this
- Counting open trials. The AI uses 200 as the denominator (19.0%). Try: Add: "Do not count trials that are still open; the denominator is 180."
- Wrong 30-day numerator. The AI uses 14 or 58. Try: Add: "The 30-day count includes the 14-day conversions: 38 + 14 = 52; exclude the 6 after day 30."
- Missing the excluded line. The AI doesn't say what was left out. Try: Add: "Last line: Excluded: 20 trials still open."
- Extra text. The AI writes commentary on the marketing figure. Try: Add: "Exactly 3 plain-text lines, under 50 words."
What a strong prompt includes
- Fixes line format
- Open trials
- Cumulative window
- One decimal
- Caps
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