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The Last Minute Statistics Livestream [Bicen Maths] Tues 18th June, 5pm-5.45pm

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If you'd like to access a 2 hour recording of a Zoom revision session for stats, plus an additional video going through some additional questions I set, you can purchase them here, and access all the materials immediately in the confirmation email (check your spam if it doesn't arrive!): buytickets.at/...
We'll focus on the stats element of Paper 3 in readiness for Thursday's exam - see you there!
Here are the questions I'll be using: drive.google.c...

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17 июн 2024

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Комментарии : 56

@Ogd599 Месяц назад

Sir you and mr astbury have clutched up A-Level maths for us students this year, so thank you !

@maymuunyousuf9552 Месяц назад

and the fact that i was just watching mr astbury hard alevel questions #60 😄😄

@nickrev17 Месяц назад

why are you impersonating a maths youtuber 😭

@NilPatel05 Месяц назад

real zeeshan fan eh

@TsukkiSenpai727 Месяц назад

Thank you Mr Biscen you helped me so much for my a level maths & further maths - I wish you all the best keep teaching as well as you do!

@BicenMaths Месяц назад

Thank you so much! Good luck! :)

@NilPatel05 Месяц назад

thank you so much for this, and making up your own questions must have taken hard work really appreciate it

@BicenMaths Месяц назад

Such a nice thing to say - thank you! I have wanted to write my own questions for a while to become a better teacher - so I figured it was time to get started!

@epikgamingcat Месяц назад

we need a Bicen TotK letsplay.

@dannyhodson2525 Месяц назад

Thanks sir your the best, look forward to seeing you in the exam hall with us tomorrow, best of look to us all on the last maths exam!!!!

@BicenMaths Месяц назад

GOOD LUCK! Come say hi to me before we go in!

@user-zj2um1zi9i Месяц назад

Q1b is similar idea to proof by contradiction i.e. assume null hypothesis is true if p value is less than sig level then contradicts hence reject null hypothesis

@BicenMaths Месяц назад

Yes! That's a great way of looking at it.

@user-pl5oy8dj5t Месяц назад

At 18:48 , when u create ur probability, are you basically just putting down the most extreme thing so it strengthens the hypotheiss

@BicenMaths Месяц назад

Yes exactly!

@emster9222 Месяц назад

Do you have any idea why the grade boundries for an A* were significantly higher in 2023 than all the previos years? going from a range of 204-220 up to 244 is pretty crazy i think

@BicenMaths Месяц назад

2 things: 1) they needed to allocate fewer As and A*s than in 2022 to return to 'pre-pandemic' levels of those grades allocated - complicated to explain in detail, but we knew that grades would be up for that reason 2) the paper was much more accessible, meaning more people got higher marks, so grade boundaries jumped

@liladexter-oy9jk Месяц назад

resitting is acc okay

@yusufahmed____ Месяц назад

hi sir very last minute but for critical values is it the value that is under your significant level or the one closest to it because the solution bank says ‘closest to 0.025’ when’s it’s above 0.025 and not below it? i thought it was the one first below is your critical value?

@BicenMaths Месяц назад

It is below usually - but sometimes that might say find the value that is closest instead. Just read the Q carefully!

@Adrian_Benjamin Месяц назад

Hi sir, on question 2a) would a valid point be that there should be a fixed probabilty of winning and there should be two possible outcomes? Thank you

@BicenMaths Месяц назад

Yes - I think fixed probability makes more sense in this context than the two outcomes one.

@leaaaaaaal-cr4fm Месяц назад

For Q1.b. how did you know which mean to put as your mew i always get the two means swapped around?

@BicenMaths Месяц назад

If you put the wrong one, you'll get 0.5 as your probability, so you know it's wrong! This is where labelling of the means are really important - it should be x bar - mu / sigma. x bar is the mean of the sample mu is the mean of the population (the thing we are testing to see is true or not!)

@sb-ke6kl Месяц назад

how do you know when carrying out a hypothesis test whether or not to include greater than or equal to or just greater than?

@BicenMaths Месяц назад

Binomial - include it Normal - don't include it (it doesn't matter if you do though)

@ZahraHussain-jq8mp Месяц назад

Hi I just wanted to ask for 3b why are we doing it more then 149.5 and do we need to do it every time for normal approximation?

@kaela3096 Месяц назад

it's called the continuity correction & we do it because we go from discrete data in a binomial distribution (i.e. there are only a certain number of values it could be, like 1 or 2 or 3 etc) to continuous data in a normal distribution (i.e. it could be any value). you need to do it every time you approximate from binomial to normal

@shanks5631 Месяц назад

yh its called continuity correction cause when we go from binomial to normal we need to adjust the value they are given to us by .5 (usually minus 0.5)

@yuujilool6920 Месяц назад

Mr bicen +Mr astbury 🐐🐐🐐🐐🐐🐐

@SheepextremeNeedsRaisins Месяц назад

“Who would play the mini game 30 times?” My addiction to Sploosh Kaboom from Wind Waker would like a word…

@BicenMaths Месяц назад

Hoping for a Wind Waker remaster on Switch or Switch 2...

@asprinjuice8877 Месяц назад

nia pfp spotted

@SheepextremeNeedsRaisins Месяц назад

@@asprinjuice8877a person of culture I see

@_marcoswilliams_8456 Месяц назад

Why is the continuity correction for question 3 149.5 and not 150.5?

@BicenMaths Месяц назад

Because it was anything that is greater than 150, and 149.5 also rounds to 150!

@DylanYoseph-ms4wi Месяц назад

At 22:35, you said not to worry about the equal sign but when i used P (X≥28) i got σ = 3.33 and then got P (X

@BicenMaths Месяц назад

I don't think there's a way you can put = for normal distribution on the calc, so I don't know what you mean here!

@OmSingh-xc4rg Месяц назад

At 22:44 Why would you reject H0 As the probablity to win is greater than 0.05. Hes won more games??

@BicenMaths Месяц назад

But that probability is higher than 5% when we assume that the probability is 0.3 still - in other words, when we assume that p=0.3, it's quite likely (more than 5%) that I won at least 20 games.

@OmSingh-xc4rg Месяц назад

@@BicenMaths Ohhhhh Makes sense Thanks

@DylanYoseph-ms4wi Месяц назад

26:08 why do you put P (X>28) and not P (X≥28)? If it says at least 28 minutes does that mean not including 28?

@BicenMaths Месяц назад

It's a continuous distribution, so these actually mean the same thing. If they are discrete, then yes, they are different!