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Edexcel S3 - Wednesday 25th May AM 2016

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Normally it's 3 or even 2 marks ... one of the marks must be for putting the %

for some willy old specs they give 5 marks for confidence interval so i'm not really concern about that. on the other hand 4 marks for the new variance question seems odd to me.

Reply 1341

uwotlad69

does anyone reckon they wouldnt accept converting % to decimals from the start and doing that for the final answer i.e 0.195 instead of 19.5%?

Reply 1342

Rkai01

Original post by lai812matthew

for some willy old specs they give 5 marks for confidence interval so i'm not really concern about that. on the other hand 4 marks for the new variance question seems odd to me.

I feel u bro I spent like 8 mins on that question and 1 min on the interval q. But normally ci q's are like 4/5 marker

Reply 1343

Armpits

Anyone get 33.87 for Question 8 ??

Reply 1344

Rkai01

Original post by Nikhilm

Normally it's 3 or even 2 marks ... one of the marks must be for putting the %

Aha are you trying to reignite this % mystery?
It said mu% in the q so it normally gives you leeway on the answer because it would be like writing 19.8%% iygm

Reply 1345

Rkai01

Original post by Armpits

Anyone get 33.87 for Question 8 ??

Wrong thread dude only 7 qs

Reply 1346

Zacken

Original post by Rkai01

Wrong thread dude only 7 qs

S3 IAL had 8 questions.

Reply 1347

Zacken

Original post by cjlh

I'm glad someone else was left thinking that, I thought I'd gotten something wrong

Nah, happens all the time in S3. You get answers that are 1 line for 8 marks.

Reply 1348

OldMathsAccount

Original post by Rkai01

I feel u bro I spent like 8 mins on that question and 1 min on the interval q. But normally ci q's are like 4/5 marker

Definitely haha, the mark distribution is pretty weird.

Original post by Zacken

Nah, happens all the time in S3. You get answers that are 1 line for 8 marks.

Thinking back on past papers that's very true. Everything just intensifies in the exam lol

Reply 1349

Fbiemad

Can someone else also confirm how many marks Q4 part (a) was?
I heard few different answers (about the amount of marks for this question) so I dont know which one it is.

Part (a) was about difference in E being greater than 2.
P(I e1-e2 I > 2)

(edited 7 years ago)

Reply 1350

justalawyer1998

Original post by Rkai01

Aha are you trying to reignite this % mystery?
It said mu% in the q so it normally gives you leeway on the answer because it would be like writing 19.8%% iygm

No it wouldn't...the numbers you write are the limits of the confidence interval. They don't have a % already attached on them

EDIT: oh I see what you mean...yeah maybe but they could be dickheads about it

Reply 1351

justalawyer1998

Original post by lai812matthew

for some willy old specs they give 5 marks for confidence interval so i'm not really concern about that. on the other hand 4 marks for the new variance question seems odd to me.

Damn seems like everything in s3 has needlessly high marks

Reply 1352

username1162972

Original post by Fbiemad

5 marks I 'think'

Posted from TSR Mobile

Reply 1353

Swifty139

For the Binomial (8 marks) and Poisson (6 marks) tests when working out degrees of freedom I forgot to subtract the initial restriction (v-1 - further restrictions) on both, how many marks do you think that will have lost me? :/

Reply 1354

justalawyer1998

Original post by Zacken

S3 IAL had 8 questions.

Hey, you doing an unofficial ms?

Reply 1355

Zacken

Original post by Nikhilm

Hey, you doing an unofficial ms?

I don't mind doing one, I'll see if nobody else has done one and if so, then I'll pitch in. I think someone else might be doing one, though.

Reply 1356

justalawyer1998

Original post by Zacken

I don't mind doing one, I'll see if nobody else has done one and if so, then I'll pitch in. I think someone else might be doing one, though.

Sweet

Reply 1357

username1162972

Original post by Zacken

I don't mind doing one, I'll see if nobody else has done one and if so, then I'll pitch in. I think someone else might be doing one, though.

Yeh watch out, mandem will **** u up blud. Do it from an anonymous account in Chat section 😂

Posted from TSR Mobile

Reply 1358

N92991

Original post by Armpits

Anyone get 33.87 for Question 8 ??

33.87 as in for the upper value of the critical region? i didnt get that damn but for some reason that answer sounds better than mine :-p

Reply 1359

JoshC98

For the binomial question, did anybody else round 0.405 to 0.40 rather than 0.41? Because 0.41 would have made the total expected frequency 50.01 rather than 50?

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Edexcel S3 - Wednesday 25th May AM 2016

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