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IQ with comparison
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license: mit |
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<!DOCTYPE html> | |
<meta charset="utf-8"> | |
<style> | |
body { | |
font: 10px sans-serif; | |
} | |
.axis path, | |
.axis line { | |
fill: none; | |
stroke: #000; | |
shape-rendering: crispEdges; | |
} | |
.line { | |
fill: none; | |
stroke: steelblue; | |
stroke-width: 1.5px; | |
} | |
.defaultLine { | |
fill: none; | |
stroke: #ccc; | |
stroke-width: 1.5px; | |
} | |
.defaultArea { | |
fill: rgba(150, 150, 150, 0.9); | |
} | |
.area { | |
fill: steelblue; | |
} | |
.defaultLabel { | |
fill: #ccc; | |
font-size: 15px; | |
} | |
.label { | |
fill: steelblue; | |
font-size: 15px; | |
font-weight: bold; | |
} | |
.mean-label { | |
font-weight: bold; | |
font-size: 12px; | |
} | |
.population-label { | |
font-size: 12px; | |
} | |
.mean-container { | |
width: 165px; | |
padding-left: 413px; | |
} | |
</style> | |
<div class='mean-container'> | |
<input id='mean' type='range' min='90' max='110' value='100'> | |
<br/> | |
</div> | |
<svg></svg> | |
<script src="https://d3js.org/d3.v4.min.js"></script> | |
<script src="https://cdn.jsdelivr.net/jstat/latest/jstat.min.js"></script> | |
<script type='text/javascript'> | |
//setting up empty data array | |
var defaultData = []; | |
var data = []; | |
var dataBelowCutoff = []; | |
var cutoffCdf = 0; | |
var mean; | |
var sd; | |
getData(); // popuate data | |
// line chart based on http://bl.ocks.org/mbostock/3883245 | |
var margin = { | |
top: 20, | |
right: 20, | |
bottom: 80, | |
left: 50 | |
}, | |
width = 960 - margin.left - margin.right, | |
height = 450 - margin.top - margin.bottom; | |
var x = d3.scaleLinear() | |
.range([0, width]); | |
var y = d3.scaleLinear() | |
.range([height, 0]); | |
var xAxis = d3.axisBottom() | |
.scale(x); | |
var yAxis = d3.axisLeft() | |
.scale(y); | |
var line = d3.line() | |
.x(function(d) { | |
return x(d.q); | |
}) | |
.y(function(d) { | |
return y(d.p); | |
}); | |
var area = d3.area() | |
.x(function(d) { | |
return x(d.q); | |
}) | |
.y(function(d) { | |
return y(d.p); | |
}) | |
.y1(y(0)); | |
var svg = d3.select("svg") | |
.attr("width", width + margin.left + margin.right) | |
.attr("height", height + margin.top + margin.bottom) | |
.append("g") | |
.attr("transform", "translate(" + margin.left + "," + margin.top + ")"); | |
x.domain([40, 160]); | |
y.domain(d3.extent(data, function(d) { | |
return d.p; | |
})); | |
svg.append("g") | |
.attr("class", "x axis") | |
.attr("transform", "translate(0," + height + ")") | |
.call(xAxis); | |
svg.append("g") | |
.attr("class", "y axis") | |
.call(yAxis); | |
var path = svg.append("path") | |
.datum(data) | |
.attr("class", "line") | |
.attr("d", line); | |
var areaPath = svg.append('path') | |
.attr('class', 'area'); | |
var defaultPath = svg.append('path') | |
.datum(data) | |
.attr('class', 'defaultLine') | |
.attr('d', line); | |
var defaultAreaPath = svg.append('path') | |
.datum(dataBelowCutoff) | |
.attr('class', 'defaultArea') | |
.attr("d", area); | |
var defaultTextLabel = svg.append('text') | |
.attr('class', 'defaultLabel') | |
.attr('x', x(71)) | |
.attr('y', y(dataBelowCutoff[dataBelowCutoff.length - 1].p / 3)) | |
.text(d3.format(".1%")(cutoffCdf)); | |
var textLabel = svg.append('text') | |
.attr('class', 'label') | |
.attr('x', x(71)); | |
var numberChildrenLabel = svg.append('text') | |
.attr('class', 'label') | |
.attr('x', x(71)) | |
.attr('y', height + 40); | |
var iqLabel = svg.append('text') | |
.attr('class', 'label') | |
.attr('x', x(71)) | |
.attr('y', height + 60); | |
var labelGroup = svg.append('g') | |
.attr('transform', 'translate(' + x(71) + ',' + (height + 75) + ')'); | |
labelGroup.append('text') | |
.attr('class', 'population-label') | |
.text('in a population of 23.7 million children'); | |
var meanLabel = svg.append('text') | |
.attr('class', 'mean-label') | |
.attr('y', -10) | |
.attr('text-anchor', 'middle'); | |
var numberChildrenFormatter = d3.format(',.2r'); | |
var iqFormatter = d3.format('.0f'); | |
update(); | |
document.getElementById('mean').value = 95; | |
getData(); | |
update(); | |
function update() { | |
path.datum(data).attr("d", line); | |
areaPath.datum(dataBelowCutoff).attr("d", area); | |
textLabel | |
.attr('y', y(dataBelowCutoff[dataBelowCutoff.length - 1].p / 5 * 4)) | |
.text(d3.format(".1%")(cutoffCdf)); | |
meanLabel | |
.attr('x', x(mean)) | |
.text(mean); | |
var numberOfChildren = (cutoffCdf - 0.023) * 23.7 * 1000000; | |
if(numberOfChildren > 0) { | |
numberChildrenLabel.text(numberChildrenFormatter(numberOfChildren) + " more children with low IQ"); | |
} | |
else { | |
numberChildrenLabel.text(numberChildrenFormatter(Math.abs(numberOfChildren)) + " fewer children with low IQ"); | |
} | |
var iqPointsLost = (23.7 * (100 - mean)); | |
if(iqPointsLost > 0) { | |
iqLabel.text(iqFormatter(iqPointsLost) + " million IQ points lost") | |
} | |
else { | |
iqLabel.text(iqFormatter(Math.abs(iqPointsLost)) + " million IQ points gained"); | |
} | |
} | |
d3.select('#mean').on('input', function() { | |
getData(); | |
update(); | |
}); | |
function getData() { | |
mean = parseFloat(document.getElementById('mean').value); | |
sd = 15; | |
data = []; | |
// loop to populate data array with | |
// probabily - quantile pairs | |
for (var i = 40; i < 160; i += 1) { | |
data.push({ | |
"q": i, | |
"p": jStat.normal.pdf(i, mean, sd) | |
}); | |
}; | |
dataBelowCutoff = data.slice(0, 31); | |
cutoffCdf = jStat.normal.cdf(70, mean, sd); | |
} | |
</script> | |
<style type='text/css'> | |
input[type=range] { | |
-webkit-appearance: none; | |
margin: 18px 0; | |
width: 100%; | |
} | |
input[type=range]:focus { | |
outline: none; | |
} | |
input[type=range]::-webkit-slider-runnable-track { | |
width: 100%; | |
height: 8.4px; | |
cursor: pointer; | |
animate: 0.2s; | |
background: steelblue; | |
box-shadow: inset 0px 0px 5px rgba(0, 0, 0, 0.3); | |
border-radius: 8px; | |
} | |
input[type=range]::-webkit-slider-thumb { | |
border: 1px solid #000000; | |
height: 36px; | |
width: 16px; | |
border-radius: 3px; | |
background: #ffffff; | |
cursor: pointer; | |
-webkit-appearance: none; | |
margin-top: -14px; | |
} | |
input[type=range]:focus::-webkit-slider-runnable-track { | |
background: steelblue; | |
} | |
input[type=range]::-moz-range-track { | |
width: 100%; | |
height: 8.4px; | |
cursor: pointer; | |
animate: 0.2s; | |
box-shadow: 1px 1px 1px #000000, 0px 0px 1px #0d0d0d; | |
background: steelblue; | |
border-radius: 1.3px; | |
} | |
input[type=range]::-moz-range-thumb { | |
box-shadow: 1px 1px 1px #000000, 0px 0px 1px #0d0d0d; | |
border: 1px solid #000000; | |
height: 36px; | |
width: 16px; | |
border-radius: 3px; | |
background: #ffffff; | |
cursor: pointer; | |
} | |
input[type=range]::-ms-track { | |
width: 100%; | |
height: 8.4px; | |
cursor: pointer; | |
animate: 0.2s; | |
background: transparent; | |
border-color: transparent; | |
border-width: 16px 0; | |
color: transparent; | |
} | |
input[type=range]::-ms-fill-lower { | |
background: #2a6495; | |
border: 0.2px solid #010101; | |
border-radius: 2.6px; | |
box-shadow: 1px 1px 1px #000000, 0px 0px 1px #0d0d0d; | |
} | |
input[type=range]::-ms-fill-upper { | |
background: #3071a9; | |
border: 0.2px solid #010101; | |
border-radius: 2.6px; | |
box-shadow: 1px 1px 1px #000000, 0px 0px 1px #0d0d0d; | |
} | |
input[type=range]::-ms-thumb { | |
box-shadow: 1px 1px 1px #000000, 0px 0px 1px #0d0d0d; | |
border: 1px solid #000000; | |
height: 36px; | |
width: 16px; | |
border-radius: 3px; | |
background: #ffffff; | |
cursor: pointer; | |
} | |
input[type=range]:focus::-ms-fill-lower { | |
background: #3071a9; | |
} | |
input[type=range]:focus::-ms-fill-upper { | |
background: #367ebd; | |
} | |
</style> |
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