{"id":"dat-hs-plant-experiment-averages","audience":"high-school","category":"data","technique":"verification","title":"Check your experiment averages after dropping a bad trial","free":false,"task":"Before you make your science fair poster, you want to check your averages. Your lab notebook says fertilizer trial 3 was knocked over on day 4, so drop it. Write exactly 2 numbered lines, one per group, each as (values added) ÷ count = average to 1 decimal, then one unnumbered sentence giving the difference between the averages. Plain text, under 60 words.","materialLabel":"Your data table (attached to your prompt automatically)","material":"PLANT GROWTH EXPERIMENT - height gain after 14 days (cm)\nBean plants, same soil, same window\n\nWater only:\nTrial 1: 12\nTrial 2: 14\nTrial 3: 13\nTrial 4: 15\n\nWater + fertilizer:\nTrial 1: 18\nTrial 2: 20\nTrial 3: 4\nTrial 4: 18\n\nObservations:\n- Fertilizer plants looked darker green by day 7.\n- Watered every 2 days, 50 mL each.\n- Partner (Ellie) thinks we should add a third group with double fertilizer next time.\n- Poster due Dec 2. Judges look for \"clear data tables and honest error discussion.\"\n- Each trial was one bean plant in its own pot.\n- Heights were measured with the same ruler every morning before school.\n- My teacher wants us to explain any data we leave out in the error section.\n- Ellie is making the graphs; I'm doing the data table.","rules":[{"type":"numberedItems","count":2},{"type":"plainText"},{"type":"maxWords","max":60}],"mistakes":[{"title":"Not mentioning the knocked-over plant","why":"The table doesn't say trial 3 was ruined, so the AI averages it in.","fix":"Add: \"Drop fertilizer trial 3: it was knocked over.\"","checks":["r0","r2"]},{"title":"Not asking to see the work","why":"You need to show judges how you got each average.","fix":"Add a line to copy: \"1. Water only: (12 + 14 + 13 + 15) ÷ 4 = 13.5 cm\"","checks":["r1","numberedItems"]},{"title":"Getting a write-up instead","why":"The AI drafts your conclusion section, which is your job.","fix":"Add: \"Just the two lines and one sentence with the difference.\"","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 line: \"each line under 16 words.\"","checks":["maxWords"]},{"title":"Forgetting where it goes","why":"AI loves markdown tables and bold, which show up as clutter in your lab notebook.","fix":"Add: \"Plain text, no bold, headings or tables.\"","checks":["plainText"]}],"promptHints":[{"label":"Drops the bad trial","patterns":["trial 3","knocked","drop|exclude|remove"]},{"label":"Asks to show the math","patterns":["show (the |your )?(math|work)","x \\$|\\bx\\b.{0,10}=","calculation","step"]},{"label":"Asks for the difference","patterns":["difference","how much more","subtract"]},{"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":"Your notebook knows something the table doesn't. Tell the AI which trial to drop and ask it to show each average.","rubricLabels":["The fertilizer average drops trial 3: (18 + 20 + 18) ÷ 3 = 18.7 cm (not 15)","The water-only average is (12 + 14 + 13 + 15) ÷ 4 = 13.5 cm, shown that way","The sentence gives a difference of 5.2 cm, after the two lines, with no intro or poster advice"]}