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# S2 Yates' Correction watch

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1. In a text book i have, it says that you can use this formula for a 2x2 table

But it doesn't appear in the mark scheme, however because it gives you an exact same answer, would it be sufficient to gain the marks for working?
2. I would guess it would.

With the above method, would it be necessary to draw a table? Because, according to an AQA mark scheme at least, marks are awarded for drawing the table/calculating totals etc.
3. Yeah that was my main worry, i guess i'll see how much time i have

Thanks anyway
4. From what i recall.. if its 2 x 2 table, you have to use the Yates' Correction, |O-E| - 0.5.
From the past paper i've done (AQA), using the correction actually gains you a method mark...

(S2 exam on Thu :s)
5. (Original post by GunmanZ02)
From what i recall.. if its 2 x 2 table, you have to use the Yates' Correction, |O-E| - 0.5.
From the past paper i've done (AQA), using the correction actually gains you a method mark...

(S2 exam on Thu :s)
Same

6. (Original post by Topmanfaz)
Same

I want to say yes but i can't lie to myself
but i'll be ready before the exam.. D2 resit aswell straight after S2
7. (Original post by GunmanZ02)
I want to say yes but i can't lie to myself
but i'll be ready before the exam.. D2 resit aswell straight after S2
Ahh, I got M2 before it

Good thing I've covered up M2 last week
8. (Original post by Topmanfaz)
Ahh, I got M2 before it

Good thing I've covered up M2 last week
good for you
i got 4 exams in the next 3 days
sugar.. i should be revising now , ttyl!
9. WOOO S2 I been revising that!!!
Yate's correction is fairly easy... just for a 2x2 table... only problem is that the graphical calculator doesn't do it for you (using matrices). However its only 4 things you need to calculate, so not toooo bad.

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Updated: January 27, 2009
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