MSS - Histogram Mode - Numbas at mathcentre.ac.uk

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Merryn Horrocks

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Ready to use

2 years, 3 months ago

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Merryn Horrocks 2 years, 3 months ago

Published this.

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Merryn Horrocks 2 years, 3 months ago

Gave some feedback: Ready to use

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Brent Le Cornu 2 years, 6 months ago

Created this.

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Question statement

Adjust the slider until the mode of the chart below is equal to only $\var{modetarget_true}$ .

Give any introductory information the student needs.

			Name	Type	Generated Value

histogram	jsxgraphboard	HTML node
snapslider	number	0.1
chartvalues	list	[ 7, 6, 5, 1, 3, 2, 4 ]
modetarget_value	integer	1
barcolours	list	List of 7 items
modetarget	list	[ 3 ]
modetarget_true	number	4
othervalues	list	[ 7, 6, 5, 0, 3, 2, 4 ]
modevalues	list	[ 0, 0, 0, 1, 0, 0, 0 ]

Automatically regenerate variables?

Name

Data type

Value

xxxxxxxxxx
 
jessiecode(700, 400, [-0.7, 15, 8, -0.5], "snapslider={snapslider};othervalues={othervalues};modevalues={modevalues};modetarget={modetarget};barcolours={barcolours};"+safe("""
  xaxis = axis([0,0],[1,0]) <<
  ticks: <<majorHeight: 30, drawZero: true, label: <<offset: [-4,-25]>> >>,
  name: 'X',
  withLabel: false,
  label: <<position: 'rt', offset: [-5,10]>>
  >>;
  
  slider([1,14],[4,14],[0.5,0,8]) <<id: 'histSlider', name: 'histSlider', snapWidth: snapslider, withLabel: false>>;
  
  modevalues2 = [
      function(){return modevalues[0]*histSlider.Value();},
      function(){return modevalues[1]*histSlider.Value();},
      function(){return modevalues[2]*histSlider.Value();},
      function(){return modevalues[3]*histSlider.Value();},
      function(){return modevalues[4]*histSlider.Value();},
      function(){return modevalues[5]*histSlider.Value();},
      function(){return modevalues[6]*histSlider.Value();}
      ];
    
  chart(othervalues) <<chartStyle: 'bar', width: 1, shadow: false, colors: barcolours>>;
    
  chart(modevalues2) <<chartStyle: 'bar', width: 1, shadow: false, colors: barcolours>>;
    
  """),
["axis": true,
 "showNavigation": false,
 "grid": false,
 "showCopyright": false,
 "keepaspectratio": false  
  ])

JME function reference

This variable is an interactive HTML node. Interactive HTML nodes can not be relied upon to work correctly when resuming a session - for example, attached event callbacks will be lost, and mathematical notation will likely also break.

If this causes problems, try to create HTML nodes where you use them in content areas, instead of storing them in variables.

Description

Describe what this variable represents, and list any assumptions made about its value.

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Generated value: `jsxgraphboard`

0,0

← Depends on:

This variable doesn't seem to be used anywhere.

Parts

Extension

Extension

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{histogram}

Advice

The mode is the most frequently occurring number. You need to adjust the slider until the bar is the biggest one in the chart.

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MSS - Histogram Mode

Metadata

Taxonomy: mathcentre

Taxonomy: Kind of activity

Taxonomy: Context

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Checkpoint description

Merryn Horrocks 2 years, 3 months ago

Merryn Horrocks 2 years, 3 months ago

Brent Le Cornu 2 years, 6 months ago

Error in variable testing condition

Error

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Generated value: `jsxgraphboard`

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Extension

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Error

MSS - Histogram Mode

Metadata

Taxonomy: mathcentre

Taxonomy: Kind of activity

Taxonomy: Context

Contributors

Feedback

History

Comment

Checkpoint description

Merryn Horrocks 2 years, 3 months ago

Merryn Horrocks 2 years, 3 months ago

Brent Le Cornu 2 years, 6 months ago

Error in variable testing condition

Error

Warning

Generated value: jsxgraphboard

Parts

Extension

Generated value: `jsxgraphboard`