this post was submitted on 23 Aug 2023
33 points (73.9% liked)

Today I Learned

17813 readers
284 users here now

What did you learn today? Share it with us!

We learn something new every day. This is a community dedicated to informing each other and helping to spread knowledge.

The rules for posting and commenting, besides the rules defined here for lemmy.world, are as follows:

Rules (interactive)


Rule 1- All posts must begin with TIL. Linking to a source of info is optional, but highly recommended as it helps to spark discussion.

** Posts must be about an actual fact that you have learned, but it doesn't matter if you learned it today. See Rule 6 for all exceptions.**



Rule 2- Your post subject cannot be illegal or NSFW material.

Your post subject cannot be illegal or NSFW material. You will be warned first, banned second.



Rule 3- Do not seek mental, medical and professional help here.

Do not seek mental, medical and professional help here. Breaking this rule will not get you or your post removed, but it will put you at risk, and possibly in danger.



Rule 4- No self promotion or upvote-farming of any kind.

That's it.



Rule 5- No baiting or sealioning or promoting an agenda.

Posts and comments which, instead of being of an innocuous nature, are specifically intended (based on reports and in the opinion of our crack moderation team) to bait users into ideological wars on charged political topics will be removed and the authors warned - or banned - depending on severity.



Rule 6- Regarding non-TIL posts.

Provided it is about the community itself, you may post non-TIL posts using the [META] tag on your post title.



Rule 7- You can't harass or disturb other members.

If you vocally harass or discriminate against any individual member, you will be removed.

Likewise, if you are a member, sympathiser or a resemblant of a movement that is known to largely hate, mock, discriminate against, and/or want to take lives of a group of people, and you were provably vocal about your hate, then you will be banned on sight.

For further explanation, clarification and feedback about this rule, you may follow this link.



Rule 8- All comments should try to stay relevant to their parent content.



Rule 9- Reposts from other platforms are not allowed.

Let everyone have their own content.



Rule 10- Majority of bots aren't allowed to participate here.

Unless included in our Whitelist for Bots, your bot will not be allowed to participate in this community. To have your bot whitelisted, please contact the moderators for a short review.



Partnered Communities

You can view our partnered communities list by following this link. To partner with our community and be included, you are free to message the moderators or comment on a pinned post.

Community Moderation

For inquiry on becoming a moderator of this community, you may comment on the pinned post of the time, or simply shoot a message to the current moderators.

founded 1 year ago
MODERATORS
you are viewing a single comment's thread
view the rest of the comments
[–] givesomefucks@lemmy.world 23 points 1 year ago* (last edited 1 year ago) (1 children)

The only thing worth learning about this is sometimes the average isn't really useful.

trump has an absolutely crazy amount of felonies, and we've had a relatively small amount of presidents

[–] Palerider@feddit.uk 7 points 1 year ago (2 children)

The problem with averages is more often than not the type of average being used is not specified.

There can be a vast difference between Mean, Median or Mode.

[–] FinalRemix@lemmy.world 8 points 1 year ago (1 children)

And I regularly catch shit for saying the measure of central tendency could be any of those, and that "average" only usually means "arithmetic mean" but could be any number of measures...

...on the bright side, with that weird article, you now have a very obvious and easy-to-understand example of why it IS effing important to specify what "average" means. ;)

[–] Melkath@kbin.social 1 points 1 year ago (1 children)
[–] kogasa@programming.dev 0 points 1 year ago (1 children)
[–] Melkath@kbin.social 1 points 1 year ago (1 children)

The Central Limits Theorem is what establishes the requirements on a dataset to give a statistical analysis efficacy.

In general, it is a true blind sampling paired against a control sampling, both of which contain a population of at least 30. In extreme cases like this, the "30/30" rule would not be sufficient to give the mean analysis efficacy.

If you were me in 2007 learning about statics, you would have been answering test questions like "Cite a condition of the central limits theorem that would invalidate a mean analysis of US Presidents to Felony indictments."

That was a long ass time ago, so if I am messing up fine details, feel free to counter. I'm not digging out all my old text books to re-teach myself. I didn't grow up to be a statistician after all.

[–] kogasa@programming.dev 2 points 1 year ago (1 children)

I have a masters in math, I know what the theorem is, I just don't see how the phrase "Central Limit Theorem" forms a coherent point in this context. What about the theorem?

[–] Melkath@kbin.social 1 points 1 year ago* (last edited 1 year ago) (1 children)

It is where you would look to understand why "the average president had 2 felonies" is not a statement that holds efficacy. Maybe.

Congrats on the tuition paid. Maybe should have taken a few more english/lit/humanities courses. Buffed up that critical thinking.

[–] kogasa@programming.dev 2 points 1 year ago* (last edited 1 year ago)

That's not the context. The context is someone pointing out that there are different measures of central tendency that can be referred to as "average." The response was "Central Limit Theorem". Not particularly coherent... especially since the central limit theorem has nothing to do with it.

I didn't pay tuition. I earned a stipend and had my tuition waived like most math grad students. But pop off, dipshit.