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Howdy. I love watching your videos and assigning them with my stats students. I want to point out something that my students pointed out: INVNORM means inverse normal distribution. I hope that helps. Thanks again.

thank you for these vedio! Mr Porinchak:)

Best RUclips channel for AP stats, not even close. This channel def deserves more attention and appreciation!!!

LIFE saver thanks&love from Shenzhen, China! Appreciate your work! Mr Michael, you makes the world lighter!:))

I'm a teacher and I'm over sixty and I'm not old.

Another fantastic short! Way to go Mr. Porinchak!

A very good presentation.

😊

Much appreciated, your explanation is much better that my university lecture👍

this clearly gave answers to all my questions. amazing review

very helpful

You can use the calculator to find A and B. You just have to add plus one to the input values that you put in the calculator

You sound like Nick from New Girl.

for part b if you didnt use proportions to back up your response but still explained that middle schoolers sold more, will you not get full point?

I have a test tomorrow and you saved me thank you

3:10

10 minutes before the exam. How cooked am I?

I'm dropping out

Most free investigative task ever, though I marked the graph wrong by accident 😬 There goes a point.

For question c.ii at 25:06 , could you write it as the graph is concave down and it is decreasing at an increasing rate of change?

This is crazy helpful, thank you so much!

u king

I really get P-Values now! Thanks Mr. P!

Man the whole FRQ seemed easy hopefully the make up is as easy as this I should’ve not gone on vacation 😢

For B iii, I just said that the G model was logarithmic and concave down, is that enough?

Do you think that the #6 on the alternative test day would be as easy as this. I also thought this was easy. Even though everyone seems to tell that the #6 is always hard and you could even skip it, I thought this was fairly easy even easier than some other FRQs on this test.

Why is topic uit 1.3 and 1.4 not available?

I kept everything in the thousands for the first part, do you think I got it wrong?

You’re actually amazing ! You’ve been saving my grades 😭😭

I have a question, arent the conditional probabilities and the multiplication rule recursive? if so, wouldnt you just end up with an identity statement unless you already know they're independent or not? because you can only prove they are mutually exclusive but you cant necessarily prove that they are one or the other (independent or dependent) without knowing the P(A&B) already? what is the minimum amount of information you need to be able to differentiate between the two?

This was the very last class I avoided for my degree, but at the same time I really wanted to learn the stuff. I probably had to spend more time studying than any other class but I kicked its ass in the end and got more of a sense of accomplishment than any other class. It's definitely valuable stuff to know, and if you go into it convinced of that, you'll do well.

These were so helpful. Thank you!!

Is it fine if i made F my starting point (at the ground) and it is (1/2,0)? That would mean my C moved 1/2 unit to the right since it is a sine graph

What is the cutoff for 5 this year as an international student?

6/6 ;)

I skipped the exam day on purpose to study more and I haven’t studied at all and I have three days left 😂

Part C states that the sales decreased. It does not mention the linear model at all. I believe your answer does not actually answer what the question was asking. Since the logarithmic model increases without bound, and what really happens after t=91 is that they decrease, the error will only grow each day, as the residual (actual-predicted) will grow. Again, the linear is not mentioned in part C at all.

for B ii i got a rounded answer of 59.8 since i used the 0.396 and x that by 50 and added the 40 after

I did (1,18) for f , (3,18) for p, (1.5) for g, (2,0) for j and (2.5,9 ) for k. Would that still get the point?

do they give partial credit for showing the correct work but the wrong answer

Michael, was wondering why you didn't use phat sub c also in condition check.

What if i went back in time but i got all the values right? Would I still loose points?

I put my a, b, c, and d values like this: A = -9 B = pi C = 0 D = 9 Wouldn’t that also work since technically it delivers the same function or nah?

Great video

for C, would i be marked down if I put both pi/8 + pin/2 and 5pi/8 + pin/8?

What if I kept everything in thousands

i just realized i definitely didn't double my p value. does it not do it for you when you put ≠ in the calculator?

What if I kept the time as a fraction?

Would I get full credit if my t values were a full period behind?

I COOKED ON THIS QUESTION