// Numbas version: exam_results_page_options {"name": "Scatter plot", "extensions": ["jsxgraph"], "custom_part_types": [], "resources": [], "navigation": {"allowregen": true, "showfrontpage": false, "preventleave": false, "typeendtoleave": false}, "question_groups": [{"pickingStrategy": "all-ordered", "questions": [{"functions": {"drawgraph": {"definition": " var miny = Numbas.jme.unwrapValue(scope.variables.miny);\n var maxy = Numbas.jme.unwrapValue(scope.variables.maxy);\n var minx = Numbas.jme.unwrapValue(scope.variables.minx);\n var maxx = Numbas.jme.unwrapValue(scope.variables.maxx);\n var regy1 = Numbas.jme.unwrapValue(scope.variables.regy1);\n var regy2 = Numbas.jme.unwrapValue(scope.variables.regy2);\n\n var p1x = Numbas.jme.unwrapValue(scope.variables.p1x);\n var p1y = Numbas.jme.unwrapValue(scope.variables.p1y);\n var p2x = Numbas.jme.unwrapValue(scope.variables.p2x);\n var p2y= Numbas.jme.unwrapValue(scope.variables.p2y);\n var p3x = Numbas.jme.unwrapValue(scope.variables.p3x);\n var p3y= Numbas.jme.unwrapValue(scope.variables.p3y);\n var p4x = Numbas.jme.unwrapValue(scope.variables.p4x);\n var p4y= Numbas.jme.unwrapValue(scope.variables.p4y);\n var p5x = Numbas.jme.unwrapValue(scope.variables.p5x);\n var p5y= Numbas.jme.unwrapValue(scope.variables.p5y);\n var p6x = Numbas.jme.unwrapValue(scope.variables.p6x);\n var p6y= Numbas.jme.unwrapValue(scope.variables.p6y);\n \n var div = Numbas.extensions.jsxgraph.makeBoard('400px','400px',\n {boundingBox:[minx,maxy,maxx,miny],\n axis:false,\n showNavigation:false,\n grid:true});\n var brd = div.board; \n var xaxis=brd.createElement('axis', [[minx,0],[maxx,0]]);\n var yaxis=brd.createElement('axis', [[minx+5,miny],[minx+5,maxy]]);\n var li1=brd.create('line',[[minx,regy1],[maxx,regy2]],{fixed:true,withLabel:false});\n var pt1=brd.create('point',[p1x,p1y],{visible:true,withLabel:false}); \n var pt2=brd.create('point',[p2x,p2y],{visible:true,withLabel:false}); \n var pt3=brd.create('point',[p3x,p3y],{visible:true,withLabel:false}); \n var pt4=brd.create('point',[p4x,p4y],{visible:true,withLabel:false}); \n var pt5=brd.create('point',[p5x,p5y],{visible:true,withLabel:false}); \n var pt6=brd.create('point',[p6x,p6y],{visible:true,withLabel:false}); \nreturn div;\n ", "type": "html", "language": "javascript", "parameters": []}}, "ungrouped_variables": [], "name": "Scatter plot", "tags": [], "preamble": {"css": "", "js": ""}, "advice": "", "rulesets": {}, "parts": [{"prompt": "

What is the height of the tallest person in the sample?

\n

Answer: [[0]] cm

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What is the maximum difference in time taken to walk to work for people in the sample?

\n

Answer: [[0]] minutes

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Mark the statement that best describes what this scatter plot shows.

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In general, there is a positive correlation between a person's height and how long it takes them to walk to work.

", "

There is a positive correlation between the variables for the sample.

", "

In general, there is a negative correlation between a person's height and how long it takes them to walk to work.

", "

There is a negative correlation between the variables for the sample.

", "

In general, there is a no correlation between a person's height and how long it takes them to walk to work.

", "

There is a no correlation between the variables for the sample.

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The scatter plot below shows the relationship between an employee’s height in centimetres and how long it takes them to walk to work in minutes.

\n\n\n\n\n\n\n\n\n\n\n\n
time (mins){drawgraph()}
height (cm)
\n

\n

\n

\n

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s

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p6y

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Tests understanding of scatter plots and related concepts.

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