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Chelsea Parlett

@chelseaparlett

Ph.D, stats lover/writer✍🏼, #statistics #scicomm #datascience #statstiktok πŸ‘©πŸ»β€πŸ’» she/her

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Latest posts by Chelsea Parlett @chelseaparlett

* so much respect to those who design it. I feel like stats is not something you can teach well if you are forced to assess via a standardized test (much of which is MCQs)

07.03.2026 01:29 πŸ‘ 1 πŸ” 0 πŸ’¬ 0 πŸ“Œ 0
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a cartoon cat with an angry face is standing on its hind legs . ALT: a cartoon cat with an angry face is standing on its hind legs .

I’ve been helping a friends kid study for the AP stats exam.

I forgot how much beef I have with the AP Stats curriculum* πŸ˜‚

07.03.2026 01:29 πŸ‘ 10 πŸ” 1 πŸ’¬ 2 πŸ“Œ 0
A person with a microphone saying β€œ because I think that something awaits me in the divine for resistingβ€œ

A person with a microphone saying β€œ because I think that something awaits me in the divine for resistingβ€œ

Them: why do you keep calling yourself a β€œstatistician” instead of a β€œdata scientist”

Me:

06.03.2026 23:22 πŸ‘ 99 πŸ” 14 πŸ’¬ 1 πŸ“Œ 1

Unfortunately all my data is shited πŸ˜”

06.03.2026 20:35 πŸ‘ 0 πŸ” 0 πŸ’¬ 0 πŸ“Œ 0

My query just failed to run because I referenced a CTE as β€œunshited” πŸ’© instead of β€œunshifted” so…

06.03.2026 20:19 πŸ‘ 15 πŸ” 0 πŸ’¬ 2 πŸ“Œ 0
Me looking annoyed

Me looking annoyed

Yeah my face is stuck like this nowπŸ˜”

06.03.2026 18:48 πŸ‘ 6 πŸ” 0 πŸ’¬ 0 πŸ“Œ 0

We LOVE DATA ENGINEERS πŸ™‡πŸ»β€β™€οΈ

06.03.2026 18:38 πŸ‘ 9 πŸ” 1 πŸ’¬ 0 πŸ“Œ 0
My corgi nova looking suspicious

My corgi nova looking suspicious

Me when I can’t SELECT * FROM AMAZING_DATA.CLEAN_TABLE

06.03.2026 03:49 πŸ‘ 35 πŸ” 1 πŸ’¬ 2 πŸ“Œ 2
Santa climbs in a window, sees a letter written to him from a small child who is sleeping. The letter reads β€œobserve the counter factual”. After reading this Santa tries to shoot the child.

Santa climbs in a window, sees a letter written to him from a small child who is sleeping. The letter reads β€œobserve the counter factual”. After reading this Santa tries to shoot the child.

πŸŽ…

04.03.2026 07:24 πŸ‘ 14 πŸ” 2 πŸ’¬ 0 πŸ“Œ 1
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a cartoon of spongebob holding a piece of paper with memecenter.com written on the bottom ALT: a cartoon of spongebob holding a piece of paper with memecenter.com written on the bottom

The technically perfect CI interpretation

04.03.2026 07:17 πŸ‘ 7 πŸ” 1 πŸ’¬ 0 πŸ“Œ 0

I actually don’t mind β€œthere’s a 95% chance this kind of interval contains….β€πŸ€”

04.03.2026 07:05 πŸ‘ 7 πŸ” 0 πŸ’¬ 3 πŸ“Œ 0

πŸ’€

04.03.2026 07:00 πŸ‘ 3 πŸ” 0 πŸ’¬ 0 πŸ“Œ 0
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a close up of a cartoon character 's face wearing glasses ALT: a close up of a cartoon character 's face wearing glasses
04.03.2026 06:30 πŸ‘ 4 πŸ” 0 πŸ’¬ 0 πŸ“Œ 0

that does not meaningfully improve people’s ability to live and work with CIs 🫨 I’ve had every opinion about CIs under the sun, but this is the most peace I have felt about them πŸ§˜β€β™€οΈπŸ§˜β€β™€οΈπŸ§˜β€β™€οΈ

04.03.2026 06:26 πŸ‘ 3 πŸ” 0 πŸ’¬ 2 πŸ“Œ 0

Mattan…I cannot do it anymore πŸ§˜β€β™€οΈI’m sick of wasting my time with a technically correct but practically meaningless interpretation of CIs. We’re confusing people with the β€œ95% confident” language in order to eke out a tiny bit more technical accuracy

04.03.2026 06:26 πŸ‘ 3 πŸ” 0 πŸ’¬ 1 πŸ“Œ 0

above, perhaps a bit Bayesian?) to say there’s a 95% chance my interval contains mu

04.03.2026 06:18 πŸ‘ 4 πŸ” 0 πŸ’¬ 1 πŸ“Œ 0

- while technically the prob is 0/1 I can’t actually observe that, so I rely on my knowledge that under blah blah assumptions, in the long run, 95% of the confidence intervals constructed in this way contain mu. So without further knowledge about MY interval, I think it’s fine (though I admitted

04.03.2026 06:18 πŸ‘ 1 πŸ” 0 πŸ’¬ 1 πŸ“Œ 0

Why is it wrong (I’m not asking because I think it’s perfectly, technically correct, but because I think the reason people say it’s incorrect doesn’t really matter)

- The statement reflects the idea that frequentists view the sample as random (and therefore the interval) not the parameter

04.03.2026 06:18 πŸ‘ 0 πŸ” 0 πŸ’¬ 3 πŸ“Œ 0

95% confident is just a way to be technically correct by being unclear

04.03.2026 04:48 πŸ‘ 12 πŸ” 0 πŸ’¬ 1 πŸ“Œ 0

Just say there’s a 95% chance my interval contains the pop mean.

(It’s better than saying there’s a 95% chance the pop mean is in my interval. I cant do the whole β€œit’s either 0 or 1” thing. Im embracing the bayesian probability interpretation)

04.03.2026 04:48 πŸ‘ 23 πŸ” 0 πŸ’¬ 5 πŸ“Œ 2

And honestly what the fuck does that even MEAN?! Nothing.

04.03.2026 04:05 πŸ‘ 16 πŸ” 0 πŸ’¬ 2 πŸ“Œ 0
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a cartoon character named stitch is standing in a field with trees in the background ALT: a cartoon character named stitch is standing in a field with trees in the background

Drilling students into memorizing the β€œwe are 95% confident that….” Language is USELESS if you dont teach them what that MEANS

04.03.2026 04:05 πŸ‘ 49 πŸ” 1 πŸ’¬ 8 πŸ“Œ 1
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Donate to the ACLU Fight back against bigotry, injustice and inequality. Make your donation to the ACLU today.

Just saw that @aclu.org is suing over this!

action.aclu.org/give/pm-dona...

03.03.2026 05:11 πŸ‘ 3 πŸ” 0 πŸ’¬ 0 πŸ“Œ 0

Ugh I want that to be true 😭 I hope it is true, but I’m fearful it’s not

02.03.2026 21:10 πŸ‘ 1 πŸ” 0 πŸ’¬ 1 πŸ“Œ 0

It’s the literal least anyone can do 😭

02.03.2026 21:09 πŸ‘ 2 πŸ” 0 πŸ’¬ 0 πŸ“Œ 0

- real sus that you want to require specific ID to vote and then immediately set precedent to instantaneously invalidate people’s ids

- this also includes a β€œbounty” on trans people using the bathroom. Which is so disgusting I cannot even express how bad of an idea this is

This is deeply alarming.

02.03.2026 19:48 πŸ‘ 28 πŸ” 4 πŸ’¬ 2 πŸ“Œ 0
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Kansas revokes driver's licenses of hundreds of trans people, prompted by new law Prompted by a new law, Kansas began sending letters to some trans people saying their drivers licenses were being invalidated until they change their gender information.

🚨hey so this is absolutely HORRIBLE for so many reasons I can’t even fully list out. But a few:

- licenses are immediately invalid, making it difficult to even get around to change license or god forbid APPEAL THIS DECISION

02.03.2026 19:48 πŸ‘ 34 πŸ” 7 πŸ’¬ 3 πŸ“Œ 2
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two penguins are standing next to each other on a snowy hill . ALT: two penguins are standing next to each other on a snowy hill .

Them: it depends
Me:

28.02.2026 18:40 πŸ‘ 2 πŸ” 0 πŸ’¬ 1 πŸ“Œ 0

Perhaps we statisticians might need to stop just saying β€œit depends” and instead emphasize WHAT IT DEPENDS ON lol

28.02.2026 18:39 πŸ‘ 18 πŸ” 3 πŸ’¬ 1 πŸ“Œ 0

Like we’re not explaining the WHY and so people are taking ideas out of context πŸ€”

28.02.2026 18:38 πŸ‘ 3 πŸ” 0 πŸ’¬ 0 πŸ“Œ 1