// Numbas version: exam_results_page_options
{"name": "Experiment proof of concept", "extensions": [], "custom_part_types": [], "resources": [], "navigation": {"allowregen": true, "showfrontpage": false, "preventleave": false, "typeendtoleave": false}, "question_groups": [{"pickingStrategy": "all-ordered", "questions": [{"name": "Experiment proof of concept", "tags": [], "metadata": {"description": "<p><br></p>", "licence": "Creative Commons Attribution 4.0 International"}, "statement": "<p>This is a proof of concept question&nbsp;that demonstrates the use of adaptive marking to allow students to take measurements in an experiment, then carry out some calculations based on the values inputted. The question uses the Numbas adaptive marking feature to automatically mark the answers.&nbsp;</p>\n<p>This idea is used at Newcastle University in Chemistry and Engineering stage one laboratories.</p>\n<p></p>", "advice": "<p>The mean of a sample ${x_{1},x_{2},\\ldots ,x_{n}}$ is the sum of the values divided by the number of items $n$ in the sample</p>\n<p>\\[ {\\frac {x_{1}+x_{2}+\\cdots +x_{n}}{n}}&nbsp;\\]</p>\n<p>For example, for heights $190$, $200$ and $210$cm, the mean is</p>\n<p>\\[ \\frac {190+200+210}{3}=\\frac{600}{3}=200\\textrm{cm}\\]</p>", "rulesets": {"std": ["all", "fractionNumbers", "!collectNumbers", "!noLeadingMinus"]}, "extensions": [], "variables": {"heights": {"name": "heights", "group": "User defined variables", "definition": "[0]", "description": "", "templateType": "anything"}, "hmean": {"name": "hmean", "group": "User defined variables", "definition": "sum(heights)/len(heights)", "description": "", "templateType": "anything"}}, "variablesTest": {"condition": "", "maxRuns": 100}, "ungrouped_variables": [], "variable_groups": [{"name": "User defined variables", "variables": ["hmean", "heights"]}], "functions": {}, "preamble": {"js": "", "css": ""}, "parts": [{"type": "information", "useCustomName": true, "customName": "The Experiment", "marks": 0, "scripts": {}, "customMarkingAlgorithm": "", "extendBaseMarkingAlgorithm": true, "unitTests": [], "showCorrectAnswer": true, "showFeedbackIcon": true, "variableReplacements": [], "variableReplacementStrategy": "originalfirst", "nextParts": [], "suggestGoingBack": false, "adaptiveMarkingPenalty": 0, "exploreObjective": null, "prompt": "<p>In this experiment we are going to measure the height of three colleagues.</p>\n<p><iframe width=\"560\" height=\"315\" src=\"https://www.youtube.com/embed/aS6Jt5KUSYU\" frameborder=\"0\" allow=\"accelerometer; autoplay; encrypted-media; gyroscope; picture-in-picture\" allowfullscreen=\"allowfullscreen\"></iframe></p>"}, {"type": "gapfill", "useCustomName": true, "customName": "Data Collection", "marks": 0, "scripts": {}, "customMarkingAlgorithm": "", "extendBaseMarkingAlgorithm": true, "unitTests": [], "showCorrectAnswer": true, "showFeedbackIcon": false, "variableReplacements": [], "variableReplacementStrategy": "originalfirst", "nextParts": [], "suggestGoingBack": false, "adaptiveMarkingPenalty": 0, "exploreObjective": null, "prompt": "<p>Enter some values for the height of your colleagues.</p>\n<table border=\"1\">\n<tbody>\n<tr>\n<td>Height (cm)</td>\n<td>[[0]]</td>\n<td>[[1]]</td>\n<td>[[2]]</td>\n</tr>\n</tbody>\n</table>", "gaps": [{"type": "numberentry", "useCustomName": false, "customName": "", "marks": "0", "scripts": {}, "customMarkingAlgorithm": "", "extendBaseMarkingAlgorithm": true, "unitTests": [], "showCorrectAnswer": false, "showFeedbackIcon": false, "variableReplacements": [], "variableReplacementStrategy": "originalfirst", "nextParts": [], "suggestGoingBack": false, "adaptiveMarkingPenalty": 0, "exploreObjective": null, 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