Year 12s: what will be the first way you research your future options? >>

OCR (not MEI) S1 - Wednesday 3rd June 2015

Thread to discuss the OCR S1 paper for 2015 :smile:

Reminder - the OCR S1 exam is on Wednesday 3rd June in the morning. It is a calculator paper and lasts for 1h 30min. The paper will be marked out of 72.

As guidance, the grade boundaries in the last two years were as follows:
June 2013: A - 54, B - 47, C - 40, D - 33, E - 27.
June 2014: A - 53, B - 46, C - 39, D - 33, E - 27.

Useful resources:
Past papers back to January 2005 with all the mark schemes. Alternatively papers are on the OCR website back to 2007.
The specification can be found here (scroll to S1).
This is the formula booklet which you will be given, make sure you know how to use it and where everything is. This is particularly important for S1 since I think all but two of the formulae you need are in here.
Useful revision notes here.

Good luck everyone! :smile:

Scroll to see replies

Reply 1

dansag

this is going to be the hardest exam by far

Reply 2

sandpitturtle

perms and combs is the worst of stats :frown:

Posted from TSR Mobile

Reply 3

Killerpenguin15

So what its going to be the hadrest exam by far? At least we all have another week and a half to revise the sh*t out of it!

... And at least the grade boundaries will be low too!

Reply 4

dansag

I dont know about you but i have another 5 exams which i care much more about

Reply 5

c223

Is it just me that likes S1? All you need is in the formula book apart from standard deviation so it's simple enough

Reply 6

sandpitturtle

Original post by chloe-jessica

Is it just me that likes S1? All you need is in the formula book apart from standard deviation so it's simple enough

About 80% of its in formula book then it gets to the horrid 20% and i dont have a clue on perms and combs!! Sometimes i even mess up binomial distribution when its a bit more complex, but i got 90% on last years paper so hopefully its a good paper similar to last year this year :smile:

Posted from TSR Mobile

Reply 7

EmiratesCaptain

Original post by ella_chloe

Posted from TSR Mobile

I did last years exam as my real one. I'm a year 13 retaking... if you got 90% on last years you should be fine tbh. I got a C last year :frown:

Reply 8

Matthewdang

Does anyone know any good resources (such as clips, worksheets etc) for permutation and combination + binomial and geometric distribution? I'm really bad at them😭

Posted from TSR Mobile

Reply 9

ccfctom

Original post by Matthewdang

Does anyone know any good resources (such as clips, worksheets etc) for permutation and combination + binomial and geometric distribution? I'm really bad at them😭

Posted from TSR Mobile

examsolutions has some videos but I'm guessing you've heard of him

Reply 10

KhamZ_98

I found these walkthroughs of some past paper questions sorted by topic for S1

Binomial and geometric distributions http://youtu.be/BclHQVfjhiA
Correlation and regression http://youtu.be/hJfF-TdQlcI
Discrete random variables http://youtu.be/toWDsL5RhIA
Probability http://youtu.be/jpUSz8My17I
Representation of data http://youtu.be/P_kecbfPL2c

Reply 11

Matthewdang

Thanks. Hopefully I'll pass with these

Posted from TSR Mobile

Reply 12

gabby07

Has anyone got any tips for actually HOW they go about doing perms and combs with the more difficult questions? Would really appreciate your guys' advice :smile:

Reply 13

HecTic_H

Wow this is gonna be tough :frown:

Reply 14

nomita

Has anyone tried Q9 of June 2013??(ii),(iii)? Thnaks

Reply 15

gabby07

Hi - just needed a bit of help with part iii). Where do you go after you sub in y = -0.6(-1.6y + 21) +13 to get mean of y and x? I'm getting stuck with y = 0.96y + 0.4 :frown:

Reply 16

mkwhater

anyone got the 2014 paper?

nvm found it http://www.dotmaths.com/ocr/

Reply 17

BobbyARandomGuy

Hi, I'm new to TSR,
Can someone help me with a question from the Jan 2012 stats paper as follows:
3. A random variable X has the distribution B(13, 0.12)
Two independent values of X are found.
Find the probability that exactly one of these values is equal to 2
Thanks.

Reply 18

TheNervousWreck

Original post by gabby07

Hi - just needed a bit of help with part iii). Where do you go after you sub in y = -0.6(-1.6y + 21) +13 to get mean of y and x? I'm getting stuck with y = 0.96y + 0.4 :frown:

Surely you just do 1-0.96=0.4y

0.4y=0.4
y=1

Or maybe i'm not understanding your question right?

Reply 19

S1r

I was actually feeling really confident about S1 before the exam period started. Then all my time was consumed by revision for every other exam and I completely forgot everything about stats and suck at it now. Oh well, I've got over a week to prepare I guess.

Quick Reply

Related discussions

Latest

Articles for you

University offers: what they mean and what to do next

Students react after A-level Biology Paper 1 on 7 June 2023

Students react after A-level Business Paper 1 on 23 May 2023

Students react after A-level Physics Paper 1 on 24 May 2023

OCR (not MEI) S1 - Wednesday 3rd June 2015

Quick Reply

Related discussions

Latest

Trending

Trending

Articles for you