Bill Foster BillFoster
BillFoster
/ gist:2379655
Created
April 13, 2012 19:55
Randomisation and Try another question like this one
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| The following generates crudely a coprime pair of numbers. However on choosing Try another question like this on you get the same output pair very time | |
| { | |
| notes: "" | |
| name: MAS3214 20122013 CBA3_1 | |
| percentPass: 50 | |
| shuffleQuestions: false | |
| rulesets: { |
BillFoster
/ gist:2063849
Created
March 17, 2012 18:27
checking algorithm and odd roots of negative numbers
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| { notes: "" | |
| name: example | |
| percentPass: 50 | |
| shuffleQuestions: false | |
| rulesets:{ | |
| std:[all,fractionNumbers, !collectNumbers,!noLeadingMinus] | |
| } | |
| navigation: { | |
| allowregen: true |
BillFoster
/ gist:1903943
Created
February 24, 2012 21:41
Example of bad display with Multiple Response Part which has Steps
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| { | |
| notes: "" | |
| name: MAS3214 20122013 CBA2_5 | |
| percentPass: 50 | |
| shuffleQuestions: false | |
| extensions:[stats] | |
| rulesets:{ | |
| std:[all,fractionNumbers, !collectNumbers,!noLeadingMinus] | |
| } | |
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| variables: { | |
| j:"random(0..6)" | |
| t6: "[6,1,[[3,2]],[[7,14],[9,18],[0]]]" | |
| t10: "[10,1,[0],[[11,22],[0],[0]]]" | |
| t12:"[12,1,[0],[[13,26],[0],t6]]" | |
| t18:"[18,1,[[3,3]],[[19,38],[27,54],[0]]]" | |
| t20:"[20,0,[[5,2]],[[0],[25,50],t10]]" | |
| t22:"[22,1,[0],[[23,46],[0],[0]]]" | |
| t28:"[28,1,[0],[[29,58],[0],[0]]]" | |
| t:"[t6,t10,t12,t18,t20,t22,t28]" |
BillFoster
/ gist:1853611
Created
February 17, 2012 14:05
replace cdfNormal function in stats extension
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| //Cumulative Distribution Function of the Normal(0,1) distribution. | |
| //based on "A Note on Approximating the Normal Distribution Function", K. M. Aludaat and M. T. Alodat, Applied Mathematical Sciences 2008 | |
| //Better is Abramowitz and Stegun;" Handbook of Mathematical Functions." 1964,(formula: 26.2.17) as implemented below | |
| //var cdfconst = Math.sqrt(Math.PI/8); | |
| math.normalCDF = function(z) | |
| { | |
| var p = 0.2316419; | |
| var a1=0.319381530; | |
| var a2=-0.356563782; |
BillFoster
/ gist:1825152
Created
February 14, 2012 09:21
Display of lists - su below not displayed in latex mode.
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| { notes: " Lists to vectors as below. Vectors to lists would be more efficient as could then sum up over subranges i.e. rows and columns" | |
| name: MAS1342 20122013 CBA1a_1 | |
| extensions:[stats] | |
| percentPass: 50 | |
| shuffleQuestions: false | |
| rulesets:{ | |
| std:[all,fractionNumbers, !collectNumbers,!noLeadingMinus] | |
| } | |
| navigation: { |
BillFoster
/ gist:1819215
Created
February 13, 2012 19:13
cast to vector problems - works for L to V and not for a1 to b below
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| { notes: " Lists to vectors as below. Vectors to lists would be more efficient as could then sum up over subranges i.e. rows and columns" | |
| name: MAS1342 20122013 CBA1a_1 | |
| extensions:[stats] | |
| percentPass: 50 | |
| shuffleQuestions: false | |
| rulesets:{ | |
| std:[all,fractionNumbers, !collectNumbers,!noLeadingMinus] | |
| } | |
| navigation: { |
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| { notes: " Lists to vectors as below. Vectors to lists would be more efficient as could then sum up over subranges i.e. rows and columns" | |
| name: MAS1342 20122013 CBA1a_1 | |
| extensions:[stats] | |
| percentPass: 50 | |
| shuffleQuestions: false | |
| rulesets:{ | |
| std:[all,fractionNumbers, !collectNumbers,!noLeadingMinus] | |
| } | |
| navigation: { |
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| { notes: " Best if arrays are vectors etc and not lists so can do dot products etc" | |
| name: MAS1342 20122013 CBA1a_1 | |
| percentPass: 50 | |
| shuffleQuestions: false | |
| rulesets:{ | |
| std:[all,fractionNumbers, !collectNumbers,!noLeadingMinus] | |
| } | |
| navigation: { | |
| allowregen: true |
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| { notes: " " | |
| name: MAS1341 20122013 CBA2a_1 | |
| percentPass: 50 | |
| shuffleQuestions: false | |
| rulesets:{ | |
| std:[all,fractionNumbers, !collectNumbers,!noLeadingMinus] | |
| } | |
| navigation: { | |
| allowregen: true |
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