Edexcel IAL S2 WST02 January 2021 Paper full discussion (Y13 Further Math)

I will be conducting a revision class targeting the S2 exam held on 31st May. The seminar will be conducted via zoom on Monday 30th of May, please use the following telegram link to contact me.

This video is a comprehensive discussion of the 2021 IAL Statistics paper 2. All methods and calculations are clearly explained. I hope many students will find this useful!

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0:00 Question 1 Binomial distribution/ Approximating binomial to Poisson/ Hypothesis testing for a binomial distribution
20:53 Question 2 Continuous distribution/ Finding the expected value and variance
36:10 Question 3 Poisson distribution/ Normal approximation to a Poisson distribution/ Hypothesis testing to a Poisson distribution.
1:07:25 Question 4 Continuous probability density functions/ Algebraic integration to prove/ Verifying the median
1:22:15 Question 5 Continuous uniform distribution/ Finding probability values and expected values for transformed variables
1:35:08 Question 6 Sampling

[mushroomravioli]

thank you soo much, you're god-sent literally

[Kindaaa]

Thank you so much !
may God bless you

[roejogan]

for Q6 the last part, could we do P(M=50) = 1/16, q^2 = 1/16 so q=1/4. then 1/16=2rq is 1/32 divided by 1/4 = r so r = 1/8. q = 1/4, r =1/8 just like you got

[sahaf]

In question number 5c, why are we calculating E(W) with 3+0/2 as it says W isnt from A to B rather A to C. so, shouldn't the size of AC be smaller than 0-3?

[josephdecosta]

Can you upload the pdf of the paper and answers please

[Athfan]

Hi, I have a small issue with your question 4, c part, the method looks a bit off I have to say, and we're supposed to get a negative & positive value when we substitute the values 1.15 and 1.25 into F(X) respectively . Because a root must mean that it's between the boundary of positive and negative, that's basically from what I have learnt, please recheck it if you have a marking scheme also.

In this case, the supposedly root is 1.2 so we must get a negative value for 1.15 and a positive value for 1.25.

Thanks you.

[Athfan]

Which country are you from? I'm predicting Sri Lanka :)
spoke Sinhala too :)

[nadyatamrin]

If you could provide Jan 2022, Oct 2021 it would be really helpful

[uvinyagunathilake]

Is it possible to upload the S2 June paper discussion too?

[aamna]

hiii!!! Could u please do jan 2022!!! ive done it but not sure of my answers so pleasee 🥺

[MD-odtu]

Im having a hard time understanding part 4 because your of your student's constant interruption