It’s a little annoying that edexel always put a random 2 marker where we need to have knowledge of the locations of the weather stations Do you have any tips to learn the large data set effectively as its allot of detail? Great video nonetheless !
Hi! I think you may have made a mistake! For question 2 part c) you answered in pounds and pence but the question said to the nearest pound! Thank you very much for the video it was super helpfuL!
How come in the first question you use continuity correction when the question asks for greater than 110( correcting to 110.5) but in the second question when the question asks for all rods with a length >(strictly greater) than 8.09 you don't correct it to 8.095
it is because the first question is a normal approximation, which is when you approximate a normal distribution using a binomial. because it is discrete data being used in a continuous form, you have to include the whole number (via a continuity correction) as you rightly said. however, the second question is just using a normal distribution and so all the data is already in continuous form if that makes sense? basically only do a continuity correction if it tells you to carry out a normal approximation. i hope this helps :)))
for the venn diagram question you took the percentage of professionals working in area A but the question states that the percentage applies to professionals who work from both area and B so how is taking the percentage for only area A correct?
On question 5 wouldn't it be 40% of everyone who is skilled and 5% of everyone who is elementary because it says in area A and area B. (I know this is wrong but I don't really understand it, so if you could explain a bit further it would be much appreciated).
Hi Sir, For Q3, part d i said “ the probability of it raining in the 14 day period is unlikely to remain constant “. Would this also be a correct answer? Since you need a fixed probability of success for binomial?
Hi Mr Astbury, great video! But one little question, in q5 part f why is P(F/H) 247+481/891 why not 247/891 since its the intersection of F and H only?
the intersection of F and H refers to where both circles overlap, even though 481 is in R aswell, it is also in both F and H so needs to be included.. hope that makes sense?
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Statistics ain't looking good for me ngl
mechanics might be worse for me bro
Same man. Three days to learn everything
Real
Both is looking long for me
HATING STATS WITH A PASSION
'large data set....oh no..' is literally the reaction i had too when i saw this question
Im so cooked
Same bro
same ive forgotten everything about stats
@@hhh11. Minor lets become drug dealers
It’s a little annoying that edexel always put a random 2 marker where we need to have knowledge of the locations of the weather stations Do you have any tips to learn the large data set effectively as its allot of detail? Great video nonetheless !
their location is in alphabetical order. thats the way i remember it. so cambourne is the lowest one and the rest going up
@@ishmaelkeita6039 thanks gonna use this haha
Hi! I think you may have made a mistake! For question 2 part c) you answered in pounds and pence but the question said to the nearest pound! Thank you very much for the video it was super helpfuL!
How come in the first question you use continuity correction when the question asks for greater than 110( correcting to 110.5) but in the second question when the question asks for all rods with a length >(strictly greater) than 8.09 you don't correct it to 8.095
it is because the first question is a normal approximation, which is when you approximate a normal distribution using a binomial. because it is discrete data being used in a continuous form, you have to include the whole number (via a continuity correction) as you rightly said. however, the second question is just using a normal distribution and so all the data is already in continuous form if that makes sense? basically only do a continuity correction if it tells you to carry out a normal approximation. i hope this helps :)))
@@cocoxcutiethis made so much sense thank you!! i was confused about this too
for the venn diagram question you took the percentage of professionals working in area A but the question states that the percentage applies to professionals who work from both area and B so how is taking the percentage for only area A correct?
On question 5 wouldn't it be 40% of everyone who is skilled and 5% of everyone who is elementary because it says in area A and area B. (I know this is wrong but I don't really understand it, so if you could explain a bit further it would be much appreciated).
fr this question is trash stupid wording from the exam board
do some madasmaths, topic questions and some predictions if possible please
I’ll try my best!
Thanks so much, this is really helpful :)
Glad it was helpful! Be sure to like and subscribe. More A Level Maths content coming soon
Thanks so much king
hi - for q5b, why do we not have the total as the total employees living in area B because the question said they live in area b
it's not conditional probability worded like 'out of those living in area b' or 'given that employee lives in area b'
@@gemmaliu3779 a bit late mate
Hi Mr Astbury, found your video super useful! Would it be possible for you go over pure Statistics A-Levels papers in future? Thank you!
For Question 4 why did we choose p(X=0) when p(x
beacuse you need to accept it when it is smaller than 0.025
Great video sir 🎉🎉🎉🎉 hope everyone is well guys gl to your exams xoxo😂^_)^😮😢😊
Mr Astbury, you are a star. Would you run videos for the Edexcel A level Maths 2019 as well? Thank you
Will do. Over half term when I have the time 👍
@@MrAstburyMaths if we dont have a lower or upper on bionimial CD as we use FX-991EX how shall we answer qs such as 4b
Sir will you be able to do 2023 paper before the Thursday exam?PLEASEEE
The papers are still locked I’m afraid so I’m not allowed to post those papers yet. Sorry!
goat
Hi Sir, For Q3, part d i said “ the probability of it raining in the 14 day period is unlikely to remain constant “. Would this also be a correct answer? Since you need a fixed probability of success for binomial?
yes
This is so useful! Thanks 👍
Should we be giving our answers to 3sf or 4dp in general ? (e.g. binomial, normal distribution)
Whatever the question says otherwise 3s.f
thank you
THANKYOU❤❤❤❤
If the question doesn't state what significant level it wants the answer to be in, is 3 sig fig alright?
i go to 4 usually
@@kanda_3584 I've checked mark schemes and they accept 3sf, but to be safe I might just write 4sf and 3sf 😅. Good luck tomorrow!
@@nectarbee5799 good luck to you too
How do you know when to put the number in the upper bracket vice versa for normal cd?
please do madasmaths papers - there aren't any videos for that
Thanks for the suggestion. Any ones in particular?
could you do some sample papers please
i never know when to use cd and pd, i hate this section :(
pd is for '=' basically one value in particular like P(X=3), however cd is cumulative so its for a range of values like P(X
Slightly confused for question 3 what calculator are u using because for binomial cd I don’t have an upper lower
@footychannel1704 You don’t need one cd finds when p(x
@@jemmagill5092 hey i still dont get it
@@shrayadevchand2078 so for example on question 1a ii) p(X>=5) is equivalent to 1-p(X
Thankyou for this :)
Hi Mr Astbury, great video! But one little question, in q5 part f why is P(F/H) 247+481/891 why not 247/891 since its the intersection of F and H only?
the intersection of F and H refers to where both circles overlap, even though 481 is in R aswell, it is also in both F and H so needs to be included.. hope that makes sense?
@@hmra-cl7po thanks alot ! makes sense now :D
what is used on a normal calculator? I cant find it for binomial cd, like i get a different table
you cant get the upper lower thing on peasent calculators, you have to figure out the value you need in terms of P(X=5) = 1- P(X
@@queenelizabethiv7012 Peasant calculator 💀
@@celestepepper1053 😭💀
@@queenelizabethiv7012Thank you for this explanation
Thank you so much, sir!!!
@ 6.44 would you loose a mark for not standardising it and making it a z model ?
im confused if i go on binomial CD on my calc for question 1 its still jsut got X N and P, not upper and lower
oh wait is this not where you put it as x = 4 and then do 1-p
@@isolof upper and lower is for NORMAL CD
not binomial
Im confused too with that one HOW THE HELL DOES HE DO IT
@@Kamil-dg4vf 29:06 he goes to binomial C.D here, yet it has upper and lower
@@guy3854 different calculator
Nice job. Thanks for the upload!
Thanks