ElectricPi wrote:I would expect a poisson distribution rather than normal. After all no one has a user name with a negative number of characters. At a glance it looks like that probably is a poisson distribution (not an expert; could be very wrong)

Through generating a Poisson distribution using the same process mean as the data (λ = 9.53) and comparing the synthetic distribution to the actual, the p-value is 0.000966. Therefore we would fail to reject the null hypothesis that GWJ forum user name length is a poisson distribution.

I'm not currently up to snuff on Poisson distributions, so I can't comment on the details of your lambda and whatnot, but I feel like your hypothesis testing is incorrect. In a Kolmogorov-Smirnov test, as you state, the null hypothesis is that your distribution matches the expected distribution (Poisson, in this case). If you've done your test correctly and the p-value is 0.000966, that means that we should reject the null hypothesis, as we are over 99.9% confident that the sample is not drawn from a population with a Poisson distribution. In other words, there is a significant difference between the GWJ population and one with a Poisson distribution, and there is less than a 0.1% chance that this was due to random chance. The K-S test is a rare example of a statistical test where a non-significant result is usually desired.

Sorry Jonman, math ahead

I'm an engineer - I ain't 'fraid o' no math.

Porque no los dos?

I'm not currently up to snuff on Poisson distributions, so I can't comment on the details of your lambda and whatnot, but I feel like your hypothesis testing is incorrect. In a Kolmogorov-Smirnov test, as you state, the null hypothesis is that your distribution matches the expected distribution (Poisson, in this case). If you've done your test correctly and the p-value is 0.000966, that means that we should reject the null hypothesis, as we are over 99.9% confident that the sample is not drawn from a population with a Poisson distribution. In other words, there is a significant difference between the GWJ population and one with a Poisson distribution, and there is less than a 0.1% chance that this was due to random chance. The K-S test is a rare example of a statistical test where a non-significant result is usually desired.

You're 100% correct. My brain was not fully on when writing that post and I've always ended up slightly backwards with my null and alternate hypotheses. Updated my OP based on your feedback, thanks!!!

That was me. I fear math.

Once I felt unconquerable, as if nothing mathematical could defeat me. I started in on calculus at the end of grade school, and won a statewide math competition in high school.

Then I hit a brick wall. What stopped me? You may wonder. Was it Finite Dimensional Vector Spaces? Differentiable Manifolds? De Rahm cohomology?

It was statistics. Specifically inferential statistics. It broke my brain. I’m not sure why. Maybe it was hormones... the timing would be right. There was no room in my hormone soaked brain for data analysis when I was obsessed with boobies.

I just discovered that Logitech makes controllers for Farm Simulator. Calling doubtingthomas!

Ha! The suicide knob is priceless and awesome.

Is there a throttle lever in Farm Simulator, or do you have to hold the gas down?

It was statistics. Specifically inferential statistics. It broke my brain. I’m not sure why. Maybe it was hormones... the timing would be right. There was no room in my hormone soaked brain for data analysis when I was obsessed with boobies.

Teenage Ken missed a trick - there's plenty of boob math to be had. Decay of bounce amplitude is a classically over-damped second order system with higher order harmonics. Does cup-size follow a bell-curve distribution? If two boobs are traveling on trains in opposite directions, no wait, I've gone too far.

. Does cup-size follow a bell-curve distribution?

Well... do they?

5G is 10, 20 or even 100Gb speeds...

Wow!

New item:

Only this week did I figure out how to remove my t-shirt without interrupting my electric toothbrush. I'm 38.

I can't say I've needed to get undressed in the two minutes my toothbrush runs for. Congrats for multi-tasking though.

I'm not entirely sure that's where the electric toothbrush is *supposed* to go, dude.

He just likes having nice armpits, ok Jonman? As Sanjuro used to say; 'so fresh, so clean'.

BadKen wrote:It was statistics. Specifically inferential statistics. It broke my brain. I’m not sure why. Maybe it was hormones... the timing would be right. There was no room in my hormone soaked brain for data analysis when I was obsessed with boobies.

Teenage Ken missed a trick - there's plenty of boob math to be had. Decay of bounce amplitude is a classically over-damped second order system with higher order harmonics. Does cup-size follow a bell-curve distribution? If two boobs are traveling on trains in opposite directions, no wait, I've gone too far.

giggity giggity

I'm not entirely sure that's where the electric toothbrush is

supposedto go, dude.

giggity-gooooooo

I just discovered that Logitech makes controllers for Farm Simulator. Calling doubtingthomas!

I've never felt any desire to play Farming Simulator... Until now...

New item:

Only this week did I figure out how to remove my t-shirt without interrupting my electric toothbrush. I'm 38.

hey you figured it out a whole year before me. But I was really pleased with myself nonetheless.

I was talking (in Dutch) to one of our (native French speaking) partners, and she kept mentioning 'fifteen days' in context of the bi-weekly meetings we were trying to set up.

Apparently in French (and Italian) there's an expression for bi-weekly: quinze jours. And apparently that comes from the Roman Empire, where months were already 30 or 31 days but divided in weeks of 7 or 8 days (in rotation). So two weeks would have been 15 days back then, and this survived in at least two Latin languages to this day!

Yet more evidence that the way the French count numbers is ridiculous.

True, but equally true is the fact that etymology recapitulates history. All those weird turns of phrase, idioms, and (esp. in English) strange unintuitive spellings tell us about the movements of groups of people, and the other groups they met with and borrowed from. Same goes for music, cooking, and art - our culture is a time machine.

The way we count in English is pretty nonsensical too. In Chinese it's much more practical, none of this teens nonsense or new words for every addition by 10.

Not really just discovered, but I just picked up on it. Remember all the futuristic TV and movies in the 80's tended to have people with brightly colored hair? We've arrived. Many people, including YT and streaming personalities have been dying their hair for a while now. Somehow I never realized this one other part of how we are living in that weird future dreamed up in my childhood that we all thought was a bit too silly to actually become real, but here we are, with all the silly hair colors of a cyberpunk dystopia afterschool special.

Not really just discovered, but I just picked up on it. Remember all the futuristic TV and movies in the 80's tended to have people with brightly colored hair? We've arrived. Many people, including YT and streaming personalities have been dying their hair for a while now. Somehow I never realized this one other part of how we are living in that weird future dreamed up in my childhood that we all thought was a bit too silly to actually become real, but here we are, with all the silly hair colors of a cyberpunk dystopia afterschool special.

Who wouldn't want to be a resident of FlavorTown(TM)??

Not really just discovered, but I just picked up on it. Remember all the futuristic TV and movies in the 80's tended to have people with brightly colored hair? We've arrived. Many people, including YT and streaming personalities have been dying their hair for a while now. Somehow I never realized this one other part of how we are living in that weird future dreamed up in my childhood that we all thought was a bit too silly to actually become real, but here we are, with all the silly hair colors of a cyberpunk dystopia afterschool special.

I knew we’d arrived in the sci fi near-future as soon as I saw Lady Gaga.

You're not wrong, but also, it kind of feels self evident that futurism becomes presentism.

Sooo....what are the themes in current-day futurism that our kids are going to be sporting in 20 years time?

In the 80s I fantasized about a “Walkman” that was roughly the size and shape of a credit card which could magically play any song ever recorded. I would imagine how freaking awesome that would be and then get down myself for wanting something that could obviously never exist. I assumed that a device like that would have to break the laws of conservation and therefore never be possible. I would never have imagined that this device would also be a phone which played movies and video games.

You're not wrong, but also, it kind of feels self evident that futurism becomes presentism.

Then where's my jetpack? WHERE'S MY JETPACK?!?

Also, a flying car would be nice.

Then where's my jetpack? WHERE'S MY JETPACK?!?

Also, a flying car would be nice.

Current jetpack technologies can do thousands of feet vertical, 85mph ground speed and have a duration of around 20 minutes. So that exists.

So do flying cars, but I think they got caught in the transition from piloted to unmanned vehicles. Most of the ones I know of are looking at unmanned flight, if they were not actually built for it.

I suspect that AGW mitigation efforts will prevent widespread adoption of these technologies outside of the military and hobbyists. We just can afford to have millions of personal flying vehicles running around, at the current levels of efficiency. Maybe when they go all-electric... Maybe.

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