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The state of things (i.imgur.com)
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[-] someguy3@lemmy.world 255 points 10 months ago* (last edited 10 months ago)

Half the students are below average! This is outrageous!

[-] FrenziedFelidFanatic@yiffit.net 61 points 10 months ago

Below the median

Unless scores follow a standard (or any other symmetric) distribution

[-] lseif@sopuli.xyz 16 points 10 months ago
[-] plandeka@lemmy.world 6 points 10 months ago

It's absolutely not. Median is a value in the middle of a sorted set and average is, well, average. In the set of 1, 7, 10: 7 is median and 6 is average.

[-] lseif@sopuli.xyz 12 points 10 months ago

as @force pointed out, 'average' has many meanings (haha). of course a lot of the time, average is used as 'mean'. but...not always!

[-] force@lemmy.world 9 points 10 months ago* (last edited 10 months ago)

Idk man looking up a definition for "average" is like

  1. a number expressing the central or typical value in a set of data, in particular the mode, median, or (most commonly) the mean, which is calculated by dividing the sum of the values in the set by their number.

and

  1. Any measure of central tendency, especially any mean, the median, or the mode. [from c. 1735]

and

1 a : a single value (such as a mean, mode, or median) that summarizes or represents the general significance of a set of unequal values

doesn't look like that dude's using the word "wrong" to me, a lotta people and mathematicians definitely recall using "average" meaning median

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[-] lugal@sopuli.xyz 14 points 10 months ago

There are different definitions of average and one is median

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[-] AlotOfReading@lemmy.world 13 points 10 months ago

Standardized tests are normalized, so...

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[-] Broken_Monitor@lemmy.world 129 points 10 months ago

I cant tell if this is a joke or if this guy is in the bottom quartile.

[-] CarbonatedPastaSauce@lemmy.world 88 points 10 months ago

It's a satirical account, that's not a real politician.

There are plenty of them out there that are this dumb though.

[-] Broken_Monitor@lemmy.world 10 points 10 months ago

Its a little sad that it’s this hard to tell anymore. Thanks btw

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[-] marcos@lemmy.world 8 points 10 months ago* (last edited 10 months ago)

Looks like a real educational problem.

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[-] asmodee59@lemmy.world 62 points 10 months ago

First time I saw a statistician joke

[-] nahuse@sh.itjust.works 50 points 10 months ago

We just need a few more to see if there’s a trend.

[-] andrew@lemmy.stuart.fun 12 points 10 months ago* (last edited 10 months ago)

You're probably one of today's lucky 10,000.

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[-] MeaanBeaan@lemmy.world 54 points 10 months ago

Ironically, him being a fucking idiot actually proves his point.

[-] SoleInvictus 88 points 10 months ago* (last edited 10 months ago)

Wait, this isn't satire?

Edit: I commented too soon. It's satire.

[-] MeaanBeaan@lemmy.world 60 points 10 months ago

Yeah, and me being a fucking idiot proves it more.

[-] Jackcooper@lemmy.world 26 points 10 months ago

Lmaooooo I love this save

[-] ThatWeirdGuy1001@lemmy.world 16 points 10 months ago

I commend you for at least acknowledging it.

[-] Aceticon@lemmy.world 39 points 10 months ago

News at 11: "Half of people are below average!"

[-] bitflag@lemmy.world 18 points 10 months ago

Ashktually half people below the median.

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[-] MiltownClowns@lemmy.world 34 points 10 months ago

I notice there is a 25% in the top as well... Coincidence or conspiracy...

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[-] craigers@lemmy.world 31 points 10 months ago

60% of the time, it works every time

[-] son_named_bort@lemmy.world 28 points 10 months ago

I was skeptical of these numbers until I did the research. It's even worse than I thought. Did you know that only 20% of students test in the top quintile? Is our children learning?

[-] Jimmyeatsausage@lemmy.world 10 points 10 months ago

I was born extremely smart. I always tested way at the top of the curve... far superior to all my peers.

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[-] niktemadur@lemmy.world 27 points 10 months ago

I can almost see a facebook post along the lines of:
One doesn't have to be a rocket scientist to understand how terrible things are, when fully 25% of the population are in the bottom quartile.

[-] IvanOverdrive@lemm.ee 8 points 10 months ago

25%!? That's nothing. Half of people are below average. That's twice of what you quoted!

[-] UnderpantsWeevil@lemmy.world 27 points 10 months ago

Goodhart's Law: When a measure becomes a target, it ceases to be a good measure.

[-] MJKee9@lemmy.world 10 points 10 months ago

My state'a standardized test says kids are "at risk" if they aren't in the top 40% of the test. The top 50% could all be traditional "a-b" students. But because they weren't in the top 80% of a-b students they are at risk for failing academically.... It's so asinine and disheartening. The last half of the year is devoted to this idiotic test. Kids could be learning stuff that will enrich themselves... Instead they are learnig how to take a test better.

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[-] Nobody@lemmy.world 25 points 10 months ago

I'm surprised it's only 25%. These days, I'd figure at least 40% would be in the lowest quartile. Has anyone checked the math on this?

[-] BustlingChungus@lemmy.world 27 points 10 months ago

Check the math? What do I look like, a numbertician??

[-] Passerby6497@lemmy.world 7 points 10 months ago

Damn, I was really hoping to find a mathmagician!

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[-] JackGreenEarth@lemm.ee 18 points 10 months ago

An education system that always fails a set number of people, regarless of how well people do, is a bad system, however.

[-] Nougat@fedia.io 59 points 10 months ago

There will always be 25% in the bottom quartile, regardless of how well any students perform.

[-] poplargrove@lemmy.world 15 points 10 months ago

I think their point is that you could have people in the bottom quartile who learned what they are expected to, are capable, but are failed anyway because of how they compare to others.

(Assuming curved tests really work like that, never bothered reading the pretty long grading policies)

[-] Nougat@fedia.io 29 points 10 months ago

Nothing about the post says anything about how many students passed or failed. Just that the lowest 25% are the lowest 25%.

Yes, A = A.

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[-] Seraph@kbin.social 6 points 10 months ago

Oh... you didn't post this as a joke? This is depressing.

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[-] InquisitiveApathy@lemm.ee 23 points 10 months ago* (last edited 10 months ago)

As Nougat said, this has nothing to do with passing or failing and is just a consequence of measuring performance. If 100 people take a test and the lowest 25 scorers all have a 95 out of 100 points then they are still in the bottom quartile regardless of the fact that every single student passed with flying colors.

Showing a bell curve with no context means nothing.

[-] PrinceWith999Enemies@lemmy.world 12 points 10 months ago* (last edited 10 months ago)

I’ve been graded on a curve, and I’ve done it myself a couple of times. IMO, it’s usually a sign of a bad class (too much material being crammed in) or a bad teacher (didn’t get the concepts across to the majority of the students).

That said, it’s usually done when it’s needed to prevent a significant portion of the class from failing. I remember a chem exam I took where a 16/100 was a C.

The basic idea is that grades are normally distributed (ie a bell curve) which allows you to find the average grade range and shift the letter grade (eg a C or C+). There’s some professors who take the idea too far and rather than working off of an actual normal distribution try to fit the procedure to a simply skewed distribution or use it to pull down an 85/100 to a C, but in my experience that’s the exception to the rule, especially in math/science courses.

Also, iirc this is a parody account.

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[-] MargotRobbie@lemmy.world 15 points 10 months ago

But then again, 25 percent of American students are also in the top quartile on standardized tests, so it evens out.

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[-] CluckN@lemmy.world 14 points 10 months ago

Nice try everyone knows that the soyjack is on one end and the chad is at the other.

[-] Bookmeat@lemmy.world 9 points 10 months ago

Fucking genius.

[-] randon31415@lemmy.world 6 points 10 months ago

We need to get kids up to the Lake Woebegone standard!

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this post was submitted on 15 May 2024
956 points (100.0% liked)

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