// Numbas version: exam_results_page_options
{"name": "Normal Distribution experiment with mean and spread", "extensions": ["jsxgraph"], "custom_part_types": [], "resources": [], "navigation": {"allowregen": true, "showfrontpage": false, "preventleave": false, "typeendtoleave": false}, "question_groups": [{"pickingStrategy": "all-ordered", "questions": [{"name": "Normal Distribution experiment with mean and spread", "tags": [], "metadata": {"description": "<p>A normal curve is displayed. Mean and standard deviation can be set by sliders.</p>", "licence": "Creative Commons Attribution-NonCommercial-ShareAlike 4.0 International"}, "statement": "<p>Change the mean and the standard deviation and observe the effect on the normal curve.</p>", "advice": "", "rulesets": {}, "extensions": ["jsxgraph"], "builtin_constants": {"e": true, "pi,\u03c0": true, "i": true}, "constants": [], "variables": {"diagram": {"name": "diagram", "group": "Ungrouped variables", "definition": "jessiecode(700,400,[-7.5, 1, 7.5, -0.2],safe(\"\"\"\n  xaxis=axis([0,0],[1,0])<<\n  ticks: <<majorHeight: 20, drawZero: true>>,\n  name: 'z',\n  withLabel: true,\n  label: <<position: 'rt', offset: [-5,10]>>\n  >>;\n  \n  slider([1,0.95],[4,0.95],[-6,0,6]) <<id: 'mean', name: 'Mean', snapWidth: 0.5>>;\n  slider([1,0.85],[4,0.85],[0.5,0.5,10]) <<id: 'sd', name: 'StDev', snapWidth: 0.5>>;\n  \n  \n  functiongraph(function(x){m=Mean.Value();s=StDev.Value(); return 1/(s*sqrt(2*PI))*exp(-0.5*((x-m)/s)^2);}, -6, 6) <<highlight: false, strokeWidth: 2>>;  \n  \n  \"\"\"),\n[\"axis\": false,\n \"showNavigation\": false,\n \"grid\": false,\n \"showCopyright\": false,\n \"keepaspectratio\": false\n  \n  ])\n  ", "description": "", "templateType": "anything", "can_override": false}}, "variablesTest": {"condition": "", "maxRuns": 100}, "ungrouped_variables": ["diagram"], "variable_groups": [], "functions": {}, "preamble": {"js": "", "css": ""}, "parts": [{"type": "information", "useCustomName": false, "customName": "", "marks": 0, "scripts": {}, "customMarkingAlgorithm": "", "extendBaseMarkingAlgorithm": true, "unitTests": [], "showCorrectAnswer": true, "showFeedbackIcon": true, "variableReplacements": [], "variableReplacementStrategy": "originalfirst", "nextParts": [], "suggestGoingBack": false, "adaptiveMarkingPenalty": 0, "exploreObjective": null, "prompt": "<p>{diagram}</p>"}], "partsMode": "all", "maxMarks": 0, "objectives": [], "penalties": [], "objectiveVisibility": "always", "penaltyVisibility": "always", "contributors": [{"name": "Don Shearman", "profile_url": "https://numbas.mathcentre.ac.uk/accounts/profile/680/"}, {"name": "Jim Pettigrew", "profile_url": "https://numbas.mathcentre.ac.uk/accounts/profile/2037/"}, {"name": "Merryn Horrocks", "profile_url": "https://numbas.mathcentre.ac.uk/accounts/profile/4052/"}]}]}], "contributors": [{"name": "Don Shearman", "profile_url": "https://numbas.mathcentre.ac.uk/accounts/profile/680/"}, {"name": "Jim Pettigrew", "profile_url": "https://numbas.mathcentre.ac.uk/accounts/profile/2037/"}, {"name": "Merryn Horrocks", "profile_url": "https://numbas.mathcentre.ac.uk/accounts/profile/4052/"}]}