AQA Statistics 2 (B) Exam Thursday 21st June

Couldn't find a thread for this season's exam, so I thought I'd start one. How's everyone's revision going for this exam? Any revision materials/ tips/ hard past paper questions etc that people would like to share?
To get the ball rolling, here's a link (http://www.furthermaths.org.uk/onlinerevision.php) from the Further Maths Support Network to their online revision videos. I've not personally yet watched the S2B video myself, but their M1 one was good :-)

Confused over whether you should be using n, or n-1? Check out AQA's guide here; http://store.aqa.org.uk/qual/pdf/AQA-6360-6380-W-TRB-S1-GUIDANCE.PDF

(edited 11 years ago)

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Dreading this exam!!

Original post by PhysicsGirl

The S2B video was amazing, thank you!

Reply 3

PhysicsGirl

Original post by HappyBun

The S2B video was amazing, thank you!

No problem, I'm glad it helped :-) How are you feeling about the exam?

Reply 4

Miller693

I hate stats, but at least there are lots of guaranteed marks, only the one exam after this, can't wait for this week to be over! :smile:

Reply 5

HappyBun

Original post by PhysicsGirl

No problem, I'm glad it helped :-) How are you feeling about the exam?

Quite good actually, I just need to master the questions with P(...|...) in as they are so confusing :/ How about you? :smile:

Reply 6

NinjaRikki

Original post by PhysicsGirl

Hey does anyone have the S2 Jan 2012 paper?

Cheers

Reply 7

HappyBun

Original post by NinjaRikki

Hey does anyone have the S2 Jan 2012 paper?

Cheers

QP and MS

! Good luck!

AQA-MS2B-W-MS-Jan12.pdf105.4KB

AQA-MS2B-QP-Jan12.pdf124.3KB

Reply 8

PhysicsGirl

Original post by HappyBun

Quite good actually, I just need to master the questions with P(...|...) in as they are so confusing :/ How about you? :smile:

Yeah, I'm not feeling too bad about S2- more worried about M2, really! I just hope that our S2 paper is straightforward and nice :-)

Reply 9

NinjaRikki

Original post by HappyBun

QP and MS

! Good luck!

Thank you!

Good luck everyone!

Reply 10

5elsste

hi all

A couple of things which annoy me, is 30 considered large??? would i use z table or t table? and i always do something wrong on contingency tables, a stupid calculation error so need to check that in spare time.
Is it right that if the data has a known standard deviation use a z table, if it is unknown and sample is large use z table and if it is unknown and the sample is small use t table???

Also at the end of a hypothesis there is no difference between accept Ho and do not reject Ho is there??

thanks for any help

Reply 11

PhysicsGirl

Original post by 5elsste

This is a copy of the table given in the S2 Textbook, (it's on page 113):

Population, Variance, Sample size, Reference Distribution

Normal, Known, Any, N(0,1)
Normal, Unknown, Any, t(n-1)
Any, Known, Greater than or equal to 30, N(0,1)
Any, Unknown, Greater than or equal to 30, N(0,1)

Basically, learn the table and just find the row that fits the data that you have. The test statistic is always the same, it's just that if you know the standard deviation, you use that, and if you don't, then you use the unbiased estimator, the sample standard deviation.

Oh, and no, there's not a difference between concluding "do not reject H0" and "accept H0".

(edited 11 years ago)

Reply 12

5elsste

Ahh thank you for the help, i must have a different textbook but have found something very similar in mine! Need to do well on Thursday. What uni you wanting to go to? and what to study? i have a really weird offer from Manchester to study maths A*BB but the A* has to be in maths.

Reply 13

Nerdatious

Original post by Lollyage

Dreading this exam!!

You'll ace it Lola :biggrin:

Reply 14

Lollyage

Original post by Nerdatious

You'll ace it Lola :biggrin:

Haha hope so Zozo, after the calamity that was core 4, I really need this to go well! :tongue:

Reply 15

Nerdatious

Original post by Lollyage

Haha hope so Zozo, after the calamity that was core 4, I really need this to go well! :tongue:

SAME!
Core 4 was absolutely disgusting hahah.
Have you tried the video link posted up above ^^ ?
It's good the guy explains lots of questions :biggrin:

JUST 2 EXAMS LEFT YAAAY!

Reply 16

Lollyage

Original post by Nerdatious

SAME!
Core 4 was absolutely disgusting hahah.
Have you tried the video link posted up above ^^ ?
It's good the guy explains lots of questions :biggrin:

JUST 2 EXAMS LEFT YAAAY!

Link doesn't work for me :confused:

Yeah I know, core 4 could NOT have been worse, just praying for ridiculously low grade boundaries :biggrin:

I only have stats left, can't wait for freedom!! :woo:

Reply 17

Nerdatious

Original post by Lollyage

Link doesn't work for me :confused:

Yeah I know, core 4 could NOT have been worse, just praying for ridiculously low grade boundaries :biggrin:

I only have stats left, can't wait for freedom!! :woo:

You lucky thing,
oh? :s-smilie:

https://sas.elluminate.com/site/external/jwsdetect/playback.jnlp?psid=2012-05-31.1024.M.A19094825530A985248BE7E885D3EB.vcr&sid=2007018

That should work and allow the file to be downloaded. :smile:

Reply 18

Lollyage

Original post by Nerdatious

You lucky thing,
oh? :s-smilie:

https://sas.elluminate.com/site/external/jwsdetect/playback.jnlp?psid=2012-05-31.1024.M.A19094825530A985248BE7E885D3EB.vcr&sid=2007018

That should work and allow the file to be downloaded. :smile:

Still says it can't play because of something that's missing from my computer. :frown:

Oh well, I think I've pretty much covered the module now and I'm just doing past papers!!
Can't wait for it all to be over :colone:

Reply 19

Nerdatious

Original post by Lollyage

Still says it can't play because of something that's missing from my computer. :frown:

Oh well, I think I've pretty much covered the module now and I'm just doing past papers!!
Can't wait for it all to be over :colone:

okay. LUCKY YOU! :huff:

Haha only kidding, I had covered the syllabus a couple of weeks ago but then haven't done any since except for tonight and tomorrow I will do some of course!
So fingers crossed that it has all stuck in my head! Just working from the textbook at the moment :teehee: