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u/captain_salt_bag 16h ago
Statistically he'll get an 11.25 lol
(25%)
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u/Pleasant-Bluebird-97 14h ago
Not necessarily. At my uni, the scoring for multiple choice exams corrects for guessing correctly. If there's 100 questions and 4 choices per question, the scoring only starts after 25 points: 0-25 correct 0%, you go from 0 to 100% based on the number of points between 25 and 100.
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u/P-W-L 14h ago
That's a weird grading.
In my uni you either get "free" multiple choice with 4-6 choices by question and possibility of several answers to select, or every student's nightmare negative multiple choice where answering right gives you 1 point, not answering 0 and answering wrong -0.5/-1 point.
Had a teacher use both "several choices may be right" and negative points, the mean for that test was 0.5/20
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u/Competitive_Lychee28 13h ago
At my uni we grade using negative points on multiple choice as well. But you can't go below 0 for a single question, so 0.25 per correct choice in total at most 1 and at least 0
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u/Valuable_Leopard_799 12h ago
Our maths department has what'd I guess be translated as a "shoot-out".
Before the hand graded exam with open questions there's a digital multiple-choice test to lighten their load.
There's 10 questions, for every question there are 4 claims and you have to decide whether each of them is true or false. You need to get every single claim right to get 2 points, one mistake gave you 1 point, otherwise 0.
And you have to have above 75% of the points to pass that first part.
To be honest what you're describing seems simpler. I think ours forces students to understand at least some subset perfectly? It's weird, but I trust there's some reasoning behind it.
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u/FishDawgX 6h ago
I’ve taken tests where they adjust for guessing by giving some points for a skipped question. With 5 options, it’s something like 1 point for a skipped question and 5 points for a right answer (and 0 for a wrong answer). That way blind guessing is no better than not answering.
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u/BleuBrink 10h ago edited 10h ago
I always find this use of "statically the result is" to be kind of misleading. 11.25 is the expected value or the mean result across very large sampling with the results following a normal distribution. In this case the probability of getting 11 right on 45 guesses is C(45,11) * 0.7534 * 0.2511 ≈ 0.1367. Even if we include the probability of getting 12 which is ≈ 0.1291, the combined probability of getting 11 or 12 is 26.6%. Which is to also say, the probability of not getting 11 or 12 is 73.4%. "Statistically" they are nearly 3 times as likely to not get 11 or 12 than get 11 or 12. See how using the mean as the "statistical" result is misleading and meaningless?
My professor always said the expected value of a dice roll is 3.5, but you will never roll a 3.5. In fact you are just as likely to roll a 1, 2, 3, 4, 5, or 6.
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u/kotominammy 7h ago
am i trippin balls, how does this have any upvotes? they are rolling a separate chance for every question, it’s SO much different from rolling a die once. if you roll one 6-sided die once, it’s probably not going to be 3 or 4. if you roll it 45 times, the result probably adds up to something around 157.5 - which, by the way, is what standard deviation means.
this is going to cluster to form a bell curve not too dissimilar to a normal distribution. you seem to focus a lot on the individual probability of 11, but the probability of getting 9-13 questions right is 61%. the probability of getting only one or all 45 is basically zero. it’s obviously not equal despite the fact you made it look like it on the dice example (for some reason???). obviously it’s not going to be a score of exactly 11.25 (that doesn’t even make sense even ignoring the fact that we started at question 20, not 1). but it’s probably going to be around those values.
(OF COURSE, there are far too many unknowns here. what did this person answer up til question 20? are there only 4 choices or more? do points get docked for wrong answers?)
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u/BleuBrink 6h ago edited 1h ago
If you allow "Statistically he'll get an 11.25" to be a correct statement, which really means the expected value is 11.25, then the statement "Statistically a dice roll results in 3.5" is also correct because it is also saying the expected value is 3.5. The dice roll analogy is to illustrate saying "Statistically the result is the expect value" is absurd and misleading.
Here's another example. In 2024 the traffic fatality rate in the US is 1.19 fatalities per 100 million miles traveled. So if John drives a hundred miles per week for commute, could you say "Statistically John died 0.00000119 times per week"? That is the statement "Statistically the result is the expected value."
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u/goldenguyz 7h ago
> am i trippin balls, how does this have any upvotes?
It sounds smart and is contrarian. That's all you need to do numbers on this site.
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u/10ThousandMetalZones 10h ago
Some police dept in Texas had my number in their stuff as some judges phone and would call with the craziest shit. Apparently the judge owned a tire shop too. The first call I got was from a sheriff that said he was going to get tires ln his truck and if he could get a discount. I told him to let his whole dept know they could come down for free tires.
Another memorable call I got was on a Friday eve, they had some guy that was a regular problem and he was drunk driving again, they asked if they should take him home or put him In the tank, I said to keep him there until Monday.
After that one I was a little afraid I went too far, but the calls kept coming but usually it was just dumb questions or texts that weren’t that interesting
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u/METRlOS 5h ago
I used to get calls all the time because a guy with the same first name as me put down my number on his business cards. The first few months I asked to let him know he's handing out the wrong number, but I eventually just told the callers that I changed my mind as was cancelling the contract. I stopped getting calls a couple weeks after starting the sabotage.
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u/Thehornygingerman 10h ago
Was this in Alabama by any chance?
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u/BlizzardStorm8 10h ago
Ah yes. Alabama, Texas. Lovely little town.
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u/FinalSpore 10h ago
Ah yes. The crimson longhorns. Great football team.
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u/ReddBroccoli 8h ago
They roll a tide of Beavos.
Honestly a tidal wave of bullshit seems fitting for Texas
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u/Repulsive_Support844 2h ago
They might have been baiting you into criminal charges once they caught on 😂
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u/10ThousandMetalZones 35m ago
Hilariously I got my first call for the judge in like a year this afternoon after making this comment, kind of freaked me out so I just said wrong number and didn’t have any fun.
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u/Nu11X3r0 11m ago
I mean if they never claimed to be said judge I'd be hard pressed to say that offering advice to someone who asked for it is illegal.
Like if they messaged "Hey, we've pulled over Jim again for a DD, should we keep him overnight or drive him home?" That's just asking advice on what to do. If they instead said "Hey Judge Stevens, we need more information about that case with Jim." Then you probably couldn't answer without getting in trouble excluding "wrong number" or something similar.
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u/ironkodiak 8h ago edited 6h ago
Back in the land line days, I got a call from a drunk guy in jail once.
I told him 3-4 times I wasn't the person he wanted.
He kept telling me to quit messing with him so eventually I just agreed & told him I would be there to bail him out soon.
Hope he got a good rest.
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u/Grundlebot 3h ago
Some dude kept texting me after he got out of jail. It didn't matter how many times I told him I had no idea who the fuck they were and that the person they knew changed numbers.
It got to the point I started insulting his intelligence for fun just to see his reactions and he threatened he'd see me outside of this shady ass liquor store I never even heard of or seen in my life. Always wondered if someone got their ass whooped cuz of that
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u/roodeeMental 13h ago
There's a non zero chance that these happen to be the correct answer
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u/haikusbot 13h ago
There's a non zero
Chance that these happen to be
The correct answer
- roodeeMental
I detect haikus. And sometimes, successfully. Learn more about me.
Opt out of replies: "haikusbot opt out" | Delete my comment: "haikusbot delete"
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u/roodeeMental 13h ago
Im a poet and I didnt even realise
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u/Vader7071 5h ago
My grandfather had the same last name as the high school band director. My grandfather's phone number was listed in the phone book. The band director's was not (this was back in the 90's). Sure as shit, during football season, my grandfather would get a call from a frantic band student begging to be allowed to play that night at the football game, and that they were so sorry for {infraction} and if he would just let them play, it wouldn't happen again.
Every time, my grandfather would say sure, they could play that night. I was attending the high school during this time, and I could ALWAYS tell which band members had called my grandfather by mistake. The confusion on the band director's face when the student swore they had talked to him and he said is was OK for them to play was priceless. 😁😁🤣🤣
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u/Fridaywing 10h ago
This happens to me quite a lot.
One time, someone called and I already told them it was the wrong number. Called me 2nd time, I told them it was wrong number! He just scoffs at me and hangs up everytime.
Mf called me 3rd time so I played along. Told him what's up. He says they're about to go and want to confirm if it's just 5 chickens (live chicken from the sound of it.) I told him, no. How many can they carry. He says about 20 fits in the truck. I told them alright. Give me all 20, I'll pay extra. Guy got so excited and says he's gonna prepare it and hang up.
I didn't think much of it until later that day about after 4 hours. He called me again and he was sooo furious! He was cursing and shouting. Told me I wasted his time and such. I told him "bro, if you were just listening the first 2 wrong calls you made, I already told you this is the wrong number but you insist anyway so I went along." My guy cursed me the last time and hang up.
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u/Baked-Smurf 9h ago
I used to have a number that was almost the same as Pizza Hut's, and constantly got people trying to order pizza. I'd "take their order" and tell them it would be there in 30 mins, then not answer when they called back furious that their food hadn't arrived yet
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u/hobosbindle 8h ago
“I don’t know man, I guess I just didn’t feel like making it. Sucks”
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u/Baked-Smurf 7h ago
Or, when the guy said, "I'm gonna come down there and make sure you don't have a job tomorrow! What's your fucking name?"
"Baked-Smurf... but I doubt you'll be able to get me fired from Pizza Hut, man."
I almost wish I had seen his face when they told him no one with that name worked there 🤣
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u/AhvenDGale 7h ago
Not gonna lie, if you had actually told them, "baked smurf" rather than your actual name, that was probably someone in the kitchens nickname and would've gotten them fired.
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u/Any-Anybody-4239 6h ago
My parent's phone number is very close to the doctor's office in our town and we'd get calls pretty regularly. One old guy would not believe me that he dialed the wrong number so I had to just hang up. I imagine he dialed the right number and yelled at them and they had no idea what he was talking about.
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u/Ok-Active-8321 4h ago
I had a co-worker whose office phone number was the same (except for the area code) as the police department in the town across the river. At least once a week he would get a call asking how to bail little Johnny out of jail, or some such.
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u/TheJivvi 1h ago
I worked in a Domino's that had a similar number to a local taxi service. People would call and often we'd have their details already because they'd ordered from us before, or they'd give their name and adress, and then when we'd try to actually take their order, they'd just say a number of people and a suburb name.
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u/JustNoThrowsAway 8h ago
I had someone try to cheat off me in standardized testing back in middle school. She wouldn't stop pestering me, so I started giving her answers in batches of four, backwards from my answers, and if they happened to line up correctly, I made sure it didn't match mine which was more likely than not the correct answer.
Passing these tests was required to move on to high school. She did not move on to high school. 😏
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u/Sudden-Art-5895 7h ago
When I was in middle school Spanish class, the "smart girl" in class let me and my friend basically copy off her test by keeping it so we could see it on her desk. She had told us to make sure we don't copy it exactly. I would read a question, check her answer, and if it didn't seem right to me, I'd change it. She was furious when we got our tests back, and I had a C. Because she had a D. My friend got an F lol
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u/PaintDear7613 2h ago
I did this once saw a dude was copying off me. He was trying (and failing) to be sneaky, so I "accidentally" let him copy the whole thing. Then "took time" cleaning up the bubbles that scan-trons were notorious for misreading, while he turned his in. When he sat back down, I looked him straight in the eyes, erased all my answers, and did it again but with the actual answers.
I've never seen someone look so defeated.
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u/mutexsprinkles 13h ago
This guy/gal sounds rude af.
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u/Malacro 6h ago
So someone dialed in the wrong number in a text message and somehow didn’t notice?
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u/ExoTheFlyingFish 6h ago
Some people don't save contacts. I know a lot of older folks, specifically, memorize a lot of numbers because they didn't have a contacts app. Don't know why a younger person would do that, though.
Also, yeah, it's fake.
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u/Malacro 6h ago
I’ll admit I don’t save everyone as a contact, but if it’s anyone I’m going to exchange more than a few messages with I absolutely will, and anyone I felt comfortable enough with to ask to help me cheat would absolutely be in my contacts.
But yeah, it’s fake, which is what I was driving at.
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u/quirkytorch 4h ago
I won't save numbers for months. My boss's number isn't even saved right now. Also if it is a completely new number you're just keying in its extremely easy to miss a number and not notice. Yeah it's likely fake but your reasoning is not why.
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u/PalladiuM7 2h ago
I did that once when I didn't want to save my drug dealers number in my phone because my girlfriend at the time was going through it (I was supposed to be getting clean but wasn't - yes I was a scumbag, I know, I've been clean for over a year now and she forgave me). The person I texted by mistake was VERY angry and threatened to call the cops when they realized I was asking for drugs. Luckily it was a Google voice number tied to my throw away email address, so no legal issues, but it was a very silly mistake.
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u/makford92 4h ago
I once got one years ago that said "Come down, the tacos are done" and they realized pretty quickly they texted the wrong number and said "Shit, sorry wrong number" I was like "WAIT! I want tacos!" They answered with "lol" and that was it. It still makes me chuckle when I think about it lol
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u/Limp-Angle-7387 17h ago
This is insane if true. In a good way.