Widget:WJG Sandbox: Difference between revisions
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$("#details").slideToggle("slow");} | $("#details").slideToggle("slow");} | ||
function convolve_bernouli(qprobs){ | |||
//takes in an array of probabilities of guessing questions correct | |||
for (var counter = 0; counter < qprobs.length; counter++) { | |||
//if the loop is in the first iteration, then initialize the array | |||
if (counter==0){ | |||
var pdfArray=[1-qprobs[0],qprobs[0]]; | |||
}else{ | |||
//initialize new Array for pdfs | |||
var newpdfArray= []; | |||
for (var i = 0; i < pdfArray.length+1; i+=1) { | |||
newpdfArray[i]=0; | |||
} | |||
//multiply by ones first | |||
for (var i = 0; i < pdfArray.length; i+=1) { | |||
newpdfArray[i+1]+=pdfArray[i]*qprobs[counter]; //probability of adding a success | |||
newpdfArray[i]+=pdfArray[i]*(1-qprobs[counter]); | |||
} | |||
pdfArray=newpdfArray; | |||
} | |||
} | |||
console.log(pdfArray); | |||
return(pdfArray); | |||
}//ends convolve_bernouli | |||
function endExam(event) { | function endExam(event) { | ||
| Line 993: | Line 1,018: | ||
datas += "<br />You answered " + event.data.answeredRight + " out of " + event.data.examQuestions.length + " correctly.<br /> Your percentage score is: "; | datas += "<br />You answered " + event.data.answeredRight + " out of " + event.data.examQuestions.length + " correctly.<br /> Your percentage score is: "; | ||
var percent = (event.data.answeredRight / event.data.examQuestions.length) * 100; | var percent = (event.data.answeredRight / event.data.examQuestions.length) * 100; | ||
testlength=event.data.examQuestions.length; | |||
var question_probs=[]; | |||
for (var j = 0; j < testlength; j+=1){ | |||
question_probs[j]=Math.random(); | |||
} | |||
qdist=convolve_bernouli(question_probs); | |||
datas += percent + "%<br /><br />Click the Navigation Buttons on the left to review the questions you answered."; | datas += percent + "%<br /><br />Click the Navigation Buttons on the left to review the questions you answered."; | ||
var api = new mw.Api(); | var api = new mw.Api(); | ||