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Visualising random variables

40 pointsby baoyuabout 9 years ago

4 comments

dexwizabout 9 years ago
Displaying a a function with changing values, instead of a static one, does change how you process the information. This gives an advantage to computer screens over chalkboards.<p>I am not sure about the implementation. The author seems new to webdesign. He spends 2 paragraphs explaining how he made the image changes, hint, he used a looped gif. Then he has an idea of an &quot;after image&quot; but then admits he cannot do it. The numbers dancing around at the end is hard to digest. It&#x27;s clear that one is not moving, but that is about it.<p>In the comments Rahul posts a graph where circles are plotted and fade over time with random inputs. He then plots various functions where the grouping is obvious and easily digestible.<p>Overall it looks like a great collaboration. Someone having an design idea but incapable of executing, and something else doing a better technical implementation. While the idea is completely unoriginal, its still a fun story.
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justifierabout 9 years ago
&gt; When teaching mathematics, the traditional method of lecturing in front of a blackboard is still hard to improve upon, despite all the advances in modern technology.<p>i completely disagree on a multitude of fronts<p>what is meant by &#x27;traditional&#x27;? my understanding of plato&#x27;s academia was it was a forum for discussion stead some silent note taking mass attempting to keep pace with an informer whose information is variant based on how they slept and whether they ate recently<p>current academic lectures need to go away<p>i&#x27;d rather see professors make succinct learning material, a la well edited video lectures andor notes, and offer them to students as suggested material and have a weekly meeting where the material is discussed<p>also, technology has always informed mathematics and trying to deny that in lieu of, what i assume is, some personal distaste for contemporary technology and its uses seems disingenuous<p>when i research mathematics i sometimes take time away with a pencil and paper, but usually only to find new directions to lead an idea; in the vast majority of my work i collaborate with a computer<p>i like using many mediums for expression, but if i were forced to choose one over the other i would definitely choose the computer<p>i can always do what i do on paper with a computer, the opposite would leave me severely wanting
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gus_massaabout 9 years ago
It&#x27;s possible to make something similar with Excel. Something like<p><pre><code> A1 = &quot;X&quot; B1 = Integer( 6 * Random() + 1 ) A2 = &quot;Y&quot; B2 = Integer( 6 * Random() + 1 ) A3 = &quot;X+Y&quot; B3 = B1 + B2 A4 = &quot;Z&quot; B4 = 7 - B1 A5 = &quot;X+Z&quot; B5 = B1 + B4 </code></pre> And then press &quot;F9&quot; to refresh the random values and get new ones.
justifierabout 9 years ago
visualising random variables:<p><a href="https:&#x2F;&#x2F;www.youtube.com&#x2F;watch?v=5P6Dihkrvus&amp;list=PLm5k2NUmpIP8qwttAS5Batnd7u2UpBtaL" rel="nofollow">https:&#x2F;&#x2F;www.youtube.com&#x2F;watch?v=5P6Dihkrvus&amp;list=PLm5k2NUmpI...</a>