{"id":"dat-pm-signup-funnel-no-tests","audience":"product-managers","category":"data","technique":"context","title":"Compute signup funnel step rates without test accounts","free":false,"task":"You're sharing last week's signup funnel. QA ran 200 test signups that hit the signup page and created accounts, then stopped; remove them from both of those steps. Write exactly 4 numbered lines, one per step, each as Step: count ÷ previous count = X%, then one unnumbered last line naming the step with the lowest rate. Plain text, under 70 words.","materialLabel":"Funnel export (attached to your prompt automatically)","material":"SIGNUP FUNNEL - week of Nov 3 (from Trackwise)\n\nStep | Users\nVisited signup page | 10,200\nCreated account | 4,200\nVerified email | 3,000\nCompleted profile | 2,700\nCreated first project | 1,350\n\nNotes:\n- New \"Sign up with work email\" button launched Nov 4.\n- Design wants to A/B test a shorter profile form next sprint.\n- Marketing says the funnel \"converts 13%\" (first project ÷ visits) - they used the raw numbers.\n- Trackwise counts unique users per step.\n- QA ran their test signups from the staging environment, but they still hit production analytics.\n- Email verification links expire after 24 hours.\n- The profile step asks for job title and team size; both are optional.\n- Last month's funnel review was skipped because of the launch.\n- Readout goes in the weekly product update on Friday.","rules":[{"type":"numberedItems","count":4},{"type":"plainText"},{"type":"maxWords","max":70}],"mistakes":[{"title":"Not mentioning the test accounts","why":"The AI can't know about QA's run, so the first two steps are off.","fix":"Add: \"Remove 200 QA test users from the first two steps.\"","checks":["r0"]},{"title":"Not defining the rate","why":"The AI divides every step by the top of the funnel instead of the step before.","fix":"Add: \"Each rate = this step ÷ the previous step.\"","checks":["r1"]},{"title":"Not showing the division","why":"Bare percents hide which counts were used.","fix":"Add a line to copy: \"1. Created account: 4,000 ÷ 10,000 = 40%\"","checks":["numberedItems","r0"]},{"title":"Leaving the ending open","why":"The AI adds a page of ideas for fixing the funnel.","fix":"Add: \"Then one sentence naming the lowest step. Nothing else.\"","checks":["r2"]},{"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: \"each line under 10 words, the sentence under 15.\"","checks":["maxWords"]},{"title":"Forgetting where it goes","why":"AI loves markdown tables and bold, which show up as clutter in a product channel.","fix":"Add: \"Plain text, no bold, headings or tables.\"","checks":["plainText"]}],"promptHints":[{"label":"Removes the test accounts","patterns":["test","qa","200"]},{"label":"Defines the rate","patterns":["previous step","step before","step.{0,10}(÷|divided)"]},{"label":"Asks to show the math","patterns":["show (the |your )?(math|work)","x \\$|\\bx\\b.{0,10}=","calculation","step"]},{"label":"Sets a word limit","patterns":["\\d+\\s*words","word (limit|count)","under \\d+"]},{"label":"Asks for plain text","patterns":["plain","no bold","no markdown","no formatting","no (headings|tables)"]}],"hint":"The export includes users who aren't real. Tell the AI about them and say how each step's rate is calculated.","rubricLabels":["With test accounts removed, Created account is 4,000 ÷ 10,000 = 40% and Verified email is 3,000 ÷ 4,000 = 75%","Completed profile is 2,700 ÷ 3,000 = 90% and Created first project is 1,350 ÷ 2,700 = 50%","The last line names Created account as the lowest step, with no intro"]}