30:T1b9d,data = [ { "x": 240, "y": 72.5 }, { "x": 14, "y": 87.8 }, { "x": 161, "y": 84.4 }, { "x": 54, "y": 81.1 }, { "x": 442, "y": 116.4 }, { "x": 5, "y": 59.4 }, { "x": 113, "y": 66.2 }, { "x": 211, "y": 73.8 }, { "x": 220, "y": 74.7 }, { "x": 180, "y": 96.2 }, { "x": 83, "y": 66.8 }, { "x": 235, "y": 89.3 }, { "x": 55, "y": 98.3 }, { "x": 353, "y": 97.5 }, { "x": 177, "y": 67.3 }, { "x": 352, "y": 94.9 }, { "x": 351, "y": 96.8 }, { "x": 321, "y": 93.3 }, { "x": 245, "y": 79.4 }, { "x": 413, "y": 99.1 }, { "x": 239, "y": 84.1 }, { "x": 238, "y": 91.8 }, { "x": 281, "y": 83.8 }, { "x": 4, "y": 64.7 }, { "x": 212, "y": 74.5 }, { "x": 311, "y": 89.1 }, { "x": 9, "y": 88.5 }, { "x": 170, "y": 91.6 }, { "x": 385, "y": 103.6 }, { "x": 14, "y": 82.1 }, { "x": 3, "y": 41.4 }, { "x": 64, "y": 98.3 }, { "x": 416, "y": 112.3 }, { "x": 294, "y": 91.7 }, { "x": 239, "y": 79.1 }, { "x": 88, "y": 94.1 }, { "x": 4, "y": 74.5 }, { "x": 124, "y": 79.1 }, { "x": 197, "y": 74.4 }, { "x": 6, "y": 67.7 }, { "x": 332, "y": 98.7 }, { "x": 129, "y": 88 }, { "x": 163, "y": 75 }, { "x": 212, "y": 92.3 }, { "x": 11, "y": 72.6 }, { "x": 124, "y": 110.2 }, { "x": 9, "y": 68.2 }, { "x": 17, "y": 95.6 }, { "x": 270, "y": 83.2 }, { "x": 134, "y": 87.7 }, { "x": 272, "y": 83.4 }, { "x": 443, "y": 106.7 }, { "x": 308, "y": 93.1 }, { "x": 362, "y": 91.5 }, { "x": 180, "y": 68 }, { "x": 235, "y": 80.1 }, { "x": 49, "y": 85.5 }, { "x": 171, "y": 79.2 }, { "x": 65, "y": 70.1 }, { "x": 153, "y": 79.7 }, { "x": 30, "y": 58.7 }, { "x": 182, "y": 77.5 }, { "x": 156, "y": 78.1 }, { "x": 3, "y": 66.9 }, { "x": 113, "y": 57.9 }, { "x": 368, "y": 105 }, { "x": 136, "y": 93 }, { "x": 293, "y": 101.6 }, { "x": 312, "y": 87 }, { "x": 338, "y": 101.2 }, { "x": 4, "y": 61.2 }, { "x": 331, "y": 91 }, { "x": 143, "y": 67.5 }, { "x": 227, "y": 85.7 }, { "x": 11, "y": 104.7 }, { "x": 140, "y": 63.7 }, { "x": 279, "y": 94 }, { "x": 371, "y": 98.2 }, { "x": 349, "y": 103.7 }, { "x": 5, "y": 69.9 }, { "x": 268, "y": 92.9 }, { "x": 7, "y": 95.9 }, { "x": 242, "y": 93.2 }, { "x": 46, "y": 73.8 }, { "x": 157, "y": 99.5 }, { "x": 302, "y": 92.9 }, { "x": 173, "y": 64.7 }, { "x": 183, "y": 67.8 }, { "x": 417, "y": 108.9 }, { "x": 214, "y": 68.7 }, { "x": 139, "y": 63.8 }, { "x": 220, "y": 107.8 }, { "x": 56, "y": 81.5 }, { "x": 145, "y": 70.1 }, { "x": 355, "y": 101.9 }, { "x": 1, "y": 72.6 }, { "x": 227, "y": 81.4 }, { "x": 2, "y": 43.7 }, { "x": 180, "y": 67.1 }, { "x": 167, "y": 69.5 }, { "x": 210, "y": 82.9 }, { "x": 271, "y": 82.3 }, { "x": 317, "y": 100.1 }, { "x": 297, "y": 98.8 }, { "x": 114, "y": 77.6 }, { "x": 5, "y": 60.2 }, { "x": 150, "y": 105.5 }, { "x": 27, "y": 89.6 }, { "x": 160, "y": 77.3 }, { "x": 372, "y": 97.6 }, { "x": 311, "y": 105.6 }, { "x": 188, "y": 72.5 }, { "x": 168, "y": 76.9 }, { "x": 9, "y": 71.4 }, { "x": 377, "y": 101.3 }, { "x": 269, "y": 86.6 }, { "x": 3, "y": 79.5 }, { "x": 382, "y": 99.4 }, { "x": 169, "y": 63.5 }, { "x": 63, "y": 98.4 }, { "x": 370, "y": 95.1 }, { "x": 191, "y": 98.6 }, { "x": 74, "y": 82.2 }, { "x": 228, "y": 93.7 }, { "x": 219, "y": 74.8 }, { "x": 5, "y": 83.4 }, { "x": 229, "y": 81 }, { "x": 7, "y": 61.7 }, { "x": 220, "y": 81.6 }, { "x": 302, "y": 94.1 }, { "x": 420, "y": 115.3 }, { "x": 10, "y": 73.8 }, { "x": 211, "y": 75.4 }, { "x": 378, "y": 101.9 }, { "x": 69, "y": 98.1 }, { "x": 413, "y": 113 }, { "x": 4, "y": 78 }, { "x": 46, "y": 79 }, { "x": 418, "y": 110.8 }, { "x": 212, "y": 97.6 }, { "x": 45, "y": 87.5 }, { "x": 413, "y": 105.2 }, { "x": 34, "y": 89.8 }, { "x": 199, "y": 71.4 }, { "x": 30, "y": 103.6 }, { "x": 73, "y": 67 }, { "x": 104, "y": 64.6 }, { "x": 175, "y": 65.2 }, { "x": 3, "y": 67.7 }, { "x": 257, "y": 74.6 }, { "x": 289, "y": 89.7 }, { "x": 259, "y": 109.9 }, { "x": 355, "y": 102.3 }, { "x": 350, "y": 102.9 }, { "x": 204, "y": 98.8 }, { "x": 233, "y": 81.3 }, { "x": 456, "y": 113.7 }, { "x": 180, "y": 71.6 }, { "x": 94, "y": 75.6 }, { "x": 420, "y": 113.2 }, { "x": 23, "y": 103.6 }, { "x": 18, "y": 89.9 }, { "x": 307, "y": 93.3 }, { "x": 407, "y": 104.5 }, { "x": 71, "y": 114.3 }, { "x": 26, "y": 93.7 }, { "x": 1, "y": 68.6 }, { "x": 30, "y": 75.2 }, { "x": 27, "y": 104.5 }, { "x": 140, "y": 108.8 }, { "x": 15, "y": 105.8 }, { "x": 4, "y": 111.1 }, { "x": 3, "y": 45.8 }, { "x": 17, "y": 84.9 }, { "x": 217, "y": 90.8 }, { "x": 384, "y": 102.6 }, { "x": 105, "y": 89.1 }, { "x": 3, "y": 68.3 }, { "x": 149, "y": 68.1 }, { "x": 406, "y": 109 }, { "x": 358, "y": 95.3 }, { "x": 178, "y": 97.9 }, { "x": 7, "y": 99 }, { "x": 319, "y": 91.1 }, { "x": 9, "y": 93.5 }, { "x": 124, "y": 86.3 }, { "x": 244, "y": 86.7 }, { "x": 381, "y": 106.3 }, { "x": 183, "y": 77.1 }, { "x": 215, "y": 76.3 }, { "x": 42, "y": 108.6 }, { "x": 7, "y": 62.6 }, { "x": 324, "y": 99 } ] 31:[] 2e:{"title":"Regression","cells":[{"id":0,"value":"html`\n\n

Regression

\n`","pinned":false,"hidden":false,"mode":"ojs"},{"id":801,"value":"html`\n

Example 1\n`","pinned":false,"hidden":false,"mode":"ojs"},{"id":710,"value":"html`\n
\nThe y slope is ${slope} and the intercept is ${intercept}
\nthe formula is: y = ${slope}x + ${intercept}\n`","pinned":false,"hidden":false,"mode":"ojs"},{"id":750,"value":"html`\nmean error ${Math.abs(113.7-(slope456+intercept))}\n
mean error ${Meanerror}\n`","pinned":false,"hidden":false,"mode":"ojs"},{"id":621,"value":"vl.layer(points,line,linepoints,error)\n.height(400)\n.width(600)\n.render()","pinned":false,"hidden":false,"mode":"ojs"},{"id":646,"value":"viewof leftendpoint = slider({min:0,max:140,step:1,value:40,\n title: 'Left end point',\n description: 'Select what point you want'\n})","pinned":false,"hidden":false,"mode":"ojs"},{"id":674,"value":"viewof rightendpoint = slider({min:0,max:140,step:1,value:80,\n title: 'Right end point',\n description: 'Select what point you want'\n})","pinned":false,"hidden":false,"mode":"ojs"},{"id":740,"value":"html`\n${((slope456)+intercept)-113.7}\n`","pinned":false,"hidden":false,"mode":"ojs"},{"id":765,"value":"printTable(a)","pinned":false,"hidden":false,"mode":"ojs"},{"id":769,"value":"a = {\n var a = datax\n for(var i = 0; i < datax.length;i++){\n a[i].prediction = slope*a[i].x + intercept\n a[i].error = Math.abs(a[i].y - a[i].prediction)\n \n }\n return a\n\n}","pinned":false,"hidden":false,"mode":"ojs"},{"id":782,"value":"Meanerror = {\n var s = 0\n for(var i = 0;i < datax.length; i++){\n s = s + a[i].error\n \n }\n return s/datax.length\n\n}","pinned":false,"hidden":false,"mode":"ojs"},{"id":807,"value":"html`\n

Example 2\n`","pinned":true,"hidden":false,"mode":"ojs"},{"id":810,"value":"plot = {\n var plot = vl.layer(points)\n plot = vl.layer(plot,line)\n plot = vl.layer(plot,linepoints)\n \n for(var i = 0; i < 10;i++){\n var errorline = vl.markLine({stroke:\"black\",strokeDash:[3,2]})\n .height(300)\n .data([{x:a[i].x,y:a[i].y},{x:a[i].x,y:a[i].prediction}])\n .encode(\n vl.x().fieldQ(\"x\"),\n vl.y().fieldQ(\"y\").scale({domain:[0,140]})\n )\n plot = vl.layer(plot,errorline)\n } \n \n return plot.render()\n}","pinned":true,"hidden":false,"mode":"ojs"},{"id":38,"value":"md`\n---\n## Appendix\n`","pinned":false,"hidden":false,"mode":"ojs"},{"id":538,"value":"html`\n

Data

\n`","pinned":false,"hidden":false,"mode":"ojs"},{"id":378,"value":"$30","pinned":false,"hidden":false,"mode":"ojs"},{"id":552,"value":"html`\n

Filters

\n`","pinned":false,"hidden":false,"mode":"ojs"},{"id":575,"value":"datax = data.filter(d => d.x >= 150).slice(0,10)","pinned":false,"hidden":false,"mode":"ojs"},{"id":696,"value":"intercept = leftendpoint","pinned":false,"hidden":false,"mode":"ojs"},{"id":700,"value":"slope = (rightendpoint - leftendpoint)/500","pinned":false,"hidden":false,"mode":"ojs"},{"id":547,"value":"html`\n

Illustrations

\n`","pinned":false,"hidden":false,"mode":"ojs"},{"id":613,"value":"points = vl.markCircle({stroke:\"cornflowerblue\",fill:\"cornflowerblue\",size:40,opacity:1})\n.data(datax)\n.encode(\n vl.x().fieldQ(\"x\").axis({format:\".0f\",title:\"x\"}).scale({domain:[0,500]}),\n vl.y().fieldQ(\"y\").axis({format:\".0f\",title:\"y\"}).scale({domain:[0,140]}),\n vl.tooltip([\"x\",\"y\"])\n\n)","pinned":false,"hidden":false,"mode":"ojs"},{"id":594,"value":"line = vl.markLine({stroke:\"black\",fill:\"cornflowerblue\",size:3,clip:true})\n.data([{x:0,y:leftendpoint},{x:500,y:rightendpoint}])\n.encode(\n vl.x().fieldQ(\"x\").axis({format:\".0f\",title:\"x\"}).scale({domain:[0,500]}),\n vl.y().fieldQ(\"y\").axis({format:\".0f\",title:\"y\"}).scale({domain:[0,140]})\n )","pinned":false,"hidden":false,"mode":"ojs"},{"id":656,"value":"linepoints = vl.markCircle({stroke:\"black\",fill:\"black\",size:100,opacity:1})\n.data([{x:0,y:leftendpoint},{x:500,y:rightendpoint}])\n.encode(\n vl.x().fieldQ(\"x\").axis({format:\".0f\",title:\"x\"}).scale({domain:[0,500]}),\n vl.y().fieldQ(\"y\").axis({format:\".0f\",title:\"y\"}).scale({domain:[0,140]})\n )","pinned":false,"hidden":false,"mode":"ojs"},{"id":691,"value":"error = vl.markLine({stroke:\"black\",size:3,strokeDash:[5,7]})\n.data([{x:456,y:113.7},{x:456,y:(slope*456)+intercept}])\n.encode(\n vl.x().fieldQ(\"x\").axis({format:\".0f\",title:\"x\"}).scale({domain:[100,500]}),\n vl.y().fieldQ(\"y\").axis({format:\".0f\",title:\"y\"}).scale({domain:[0,140]})\n )","pinned":false,"hidden":false,"mode":"ojs"},{"id":542,"value":"html`\n

Imported from Redmond

\n`","pinned":false,"hidden":false,"mode":"ojs"},{"id":56,"value":"import {printTable} from '@uwdata/data-utilities'","pinned":false,"hidden":false,"mode":"ojs"},{"id":61,"value":"import {vl} from '@vega/vega-lite-api'","pinned":false,"hidden":false,"mode":"ojs"},{"id":63,"value":"import {slider,button,select,text,radio,checkbox,number} from \"@jashkenas/inputs\"","pinned":false,"hidden":false,"mode":"ojs"}],"files":"$W31","stdlib":"1","titling":"auto"}