31–40 of 50 posts
This would be a neat theory, if girls somehow used an average of the two X's... which seems compellingly logical, though the (current) theory is that only one X is used, chosen at random. http://en.wikipedia.org/wiki/Barr_body
I'm fascinated by the theory of increased variability in males being caused by brain-related genes in the X chromosome. I'd highly recommend checking out pages 18 and 19.
While an interesting hypothesis, it seems unlikely: one copy of each x-chromosome is deactivated in each cell, and this is done randomly in development.
Ah hello law of small numbers, survivorship bias and fundamental attribution error - we meet again. If you understand these 3 biases - you'll wonder what kind of world you have actually been living in all this time. I'm going to repost a my comment about this very concept as related to startups from a while ago because I believe HNers will appreciate it - it's from an article called "Startup School And Survivor Bias"…
Like twitter, right?
Ah hello law of small numbers, survivorship bias and fundamental attribution error - we meet again. If you understand these 3 biases - you'll wonder what kind of world you have actually been living in all this time. I'm going to repost a my comment about this very concept as related to startups from a while ago because I believe HNers will appreciate it - it's from an article called "Startup School And Survivor Bias"…
>Of the startups that didn't pivot - they either skipped the pivot thanks to previous side projects/companies or already had traction - and all they had to do was lever up and ride. Like twitter, right?
Ah hello law of small numbers, survivorship bias and fundamental attribution error - we meet again. If you understand these 3 biases - you'll wonder what kind of world you have actually been living in all this time. I'm going to repost a my comment about this very concept as related to startups from a while ago because I believe HNers will appreciate it - it's from an article called "Startup School And Survivor Bias"…
Well, apparently Pivoting is like the Monty Hall Problem, so this may be worth a shot
Why is this so important? The fact, that the variability increases with smaller sample size was ignored completely by the protagonists in the provided examples. Realizing weather this inverse effect is linear or not doesn't seem to be the main problem in peoples intuition.
disclaimer: I have poor understanding of statistics.
The last section on sex differences is interesting. It explains boys having greater variation in ability than girls by boys having only one X chromosome (XY) while girls have two (XX). This would be a neat theory, if girls somehow used an average of the two X's... which seems compellingly logical, though the (current) theory is that only one X is used, chosen at random. http://en.wikipedia.org/wiki/Barr_body
These seem to be well-known cases in which you really do get a phenotype that's a function of both X chromosomes.
Absolutely totally true. Ignore the laws of statistics at your own peril. Knowledge of statistics is the best investment one can make with one's time. A/B testing is the tip of the iceberg - a simple practical application, which can be exploited much better with statistics. Learn about statistical distributions - Bernouilli, Binomial, Normal, Poisson and Hypergeometric at least, then Chi distribution to grasp real te…
If someone doesn't know much about statistics what is your recommended source to learn from?
Excellent. Reminds me of the lecture describing that "the greatest shortcoming of the human race is our inability to understand the exponential function" http://youtu.be/F-QA2rkpBSY
Thanks for sharing this! Albert Bartlett does a wonderful job explaining the consequences of sustained growth rates. I find overpopulation to be one of the greatest concerns that we are not adequately dealing with. Albert's bacteria in a bottle analogy made me think of Elon Musk's attempt to bring human life to other planets.. will we not just be expanding our time of growth? Maybe we should start choosing a way to r…
The last section on sex differences is interesting. It explains boys having greater variation in ability than girls by boys having only one X chromosome (XY) while girls have two (XX). This would be a neat theory, if girls somehow used an average of the two X's... which seems compellingly logical, though the (current) theory is that only one X is used, chosen at random. http://en.wikipedia.org/wiki/Barr_body
I don't understand how that fits with the existence of X-linked-recessive diseases. ( https://en.wikipedia.org/wiki/Genetic_disorder#X-linked_rece... ) These seem to be well-known cases in which you really do get a phenotype that's a function of both X chromosomes.