{"id":"data2-check-chart-claim-churn","audience":"analysts","category":"data","track":"data","technique":"verification","level":"beginner","title":"Check four claims on a churn slide against the chart","free":false,"task":"A slide in tomorrow's board deck makes four claims about churn. Check each one against the chart data. Write exactly one line per claim starting 'Claim 1:' to 'Claim 4:', then the label Confirmed, Wrong or Not on page, then a reason with the numbers. Plain text, each reason under 15 words, under 100 words in all.","materialLabel":"Slide and chart data (attached to your prompt automatically)","material":"BOARD DECK - slide 7: \"Customer health\"\n\nClaims on the slide:\nClaim 1: Logo churn fell by half in Q3.\nClaim 2: Q3 logo churn is the lowest of the year so far.\nClaim 3: Revenue churn is under 3%.\nClaim 4: Churn has fallen every quarter this year.\n\nCHART DATA (monthly logo churn, % of customers lost in the quarter)\nQ1: 4.0%\nQ2: 3.6%\nQ3: 3.2%\nQ4: (not yet closed)\n\nChart notes:\n- The vertical axis on the chart starts at 3.0%, so the Q3 bar looks very short compared with Q1.\n- The chart title reads \"Logo churn by quarter\".\n- No revenue churn figure appears on the slide, in the chart or in the appendix pages we have.\n- Customer count at start of Q3 was 2,500 (about 80 lost in the quarter).","rules":[{"type":"plainText"},{"type":"maxWords","max":100}],"mistakes":[{"title":"Calling the chart fine","why":"The AI says the claims are broadly right and never checks the 3.6% to 3.2% drop.","fix":"Add: \"Check each claim against the data and show the numbers.\"","checks":["r0"]},{"title":"Guessing revenue churn","why":"The AI invents or infers a revenue churn figure.","fix":"Add: \"If the data doesn't cover a claim, label it Not on page.\"","checks":["r1"]},{"title":"Writing a paragraph review","why":"The AI adds an intro and a list of other recommendations.","fix":"Add: \"Exactly 4 lines starting Claim 1: to Claim 4:. No intro or notes.\"","checks":["r2"]},{"title":"Leaving the format to chance","why":"The AI picks its own length and layout unless told the exact shape.","fix":"Add: \"Plain text, no bold or headings.\"","checks":["plainText"]},{"title":"Trusting the AI to count words","why":"AI is bad at counting. Ask for a total word limit and it often lands over it.","fix":"Cap each part instead, for example \"each line under 15 words.\"","checks":["maxWords"]}],"promptHints":[{"label":"Gives the exact labels","patterns":["confirmed","not on page","wrong"]},{"label":"Says to use only the data","patterns":["only (numbers|data|facts)","from the data"]},{"label":"Shows the line shape","patterns":["claim 1:","4 lines"]},{"label":"Asks for numbers in reasons","patterns":["numbers","percent"]},{"label":"Caps reason length","patterns":["under \\d+ words","\\d+ words"]}],"hint":"Give the AI exact labels and a source of truth. It judges far better with three labels than with open feedback.","mission":"Fact-check four churn claims against the chart.","musts":["Four claim lines","Exact three labels","Reasons use numbers"],"rubricLabels":["Claim 1 is labeled Wrong, with the numbers showing 3.6% to 3.2% is a drop of 0.4 points (about 11%), not half","Claim 2 and Claim 4 are labeled Confirmed (3.2% is below 4.0% and 3.6%; 4.0 to 3.6 to 3.2 falls every quarter) and Claim 3 is labeled Not on page (no revenue churn figure is given)","There are exactly four lines starting 'Claim 1:' through 'Claim 4:', each using one of the labels Confirmed, Wrong or Not on page, with no intro or closing"]}