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Score vendor on-time delivery with the grace-day rule applied

  • For Operations and supply chain
  • You practice Catching mistakes and made-up facts
  • Time about 5 minutes
  • Level Intermediate

About this exercise

Write a prompt for plain text with exactly four lines: "Vendor X:", "Vendor Y:", "Vendor Z:" and "Below target:". Each vendor line shows on-time deliveries / total = percent, rounded to a whole percent, and then MEETS or BELOW against the 95% target. Per the contract, a delivery one day late counts as on time. The last line lists the vendors that are below target. Under 70 words.

Common mistakes when you ask AI for this

  • Counting every late arrival. The AI uses the raw late count, as the buyer's sheet does. Try: Say: "A delivery 1 day late counts as on time."
  • Wrong below-target list. The AI lists Vendor Z because it had late deliveries. Try: Say: "List only vendors whose percent is under 95%."
  • Wrong lines. The AI writes a table or prose. Try: Quote the four labels.
  • Getting markdown back. AI adds bold, headings and bullets 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 over the limit. Try: Cap each part instead of the total, for example "each line under 15 words".

What a strong prompt includes

  • Quotes the four labels
  • Applies the grace day
  • Shows on-time over total
  • States the target
  • Asks for plain text

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