[…] is a net win for math educators and math students alike. We should all be grateful for videos like this one, in particular, through which he'll either tell you something you don't know about random numbers […]

Brilliant! I’ve seen the guess-which-sequence-is-random activity for eons, but never the elegant idea of looking at the frequencies of sequences of three. It’s great to see something my students can both compute and comprehend that so clearly distinuishes the two! Thanks!

would u please send me the precise sequences so i can “replicate” your results – and examine some other questions: eg what would you infer after 10, 20 30 …..observations on each sequences (ie short finite sequences) – we’ll also check out whether count frequencies for sequences of length 1,2,3,4,5…etc “agree”

When taking triples is that abutting triples or overlapping ones or does it make no difference? I found the end of the video hard to take in, there was the captions, the pop-up bubble, and the scrolling digits; I re-wound several times to see if I was missing anything.

Good question. No it would not matter if you used a sliding window or neighboring segments. This video is just a clip of a chapter I’m about to post with narration. I’ll try to clarify better in the final version! Thanks again for your feedback

December 14, 2011 at 12:15 am

[…] is a net win for math educators and math students alike. We should all be grateful for videos like this one, in particular, through which he'll either tell you something you don't know about random numbers […]

December 17, 2011 at 2:18 am

Brilliant! I’ve seen the guess-which-sequence-is-random activity for eons, but never the elegant idea of looking at the frequencies of sequences of three. It’s great to see something my students can both compute and comprehend that so clearly distinuishes the two! Thanks!

December 22, 2011 at 5:02 am

would u please send me the precise sequences so i can “replicate” your results – and examine some other questions: eg what would you infer after 10, 20 30 …..observations on each sequences (ie short finite sequences) – we’ll also check out whether count frequencies for sequences of length 1,2,3,4,5…etc “agree”

January 7, 2012 at 2:31 pm

When taking triples is that abutting triples or overlapping ones or does it make no difference? I found the end of the video hard to take in, there was the captions, the pop-up bubble, and the scrolling digits; I re-wound several times to see if I was missing anything.

January 7, 2012 at 9:03 pm

Good question. No it would not matter if you used a sliding window or neighboring segments. This video is just a clip of a chapter I’m about to post with narration. I’ll try to clarify better in the final version! Thanks again for your feedback