AQA Statistics GCSE exam June 18th 2012

Did anyone get really confused with the first question? :L

Reply 83

Ed-studies

Please can someone put on a mark scheme? need help

Reply 84

Ed-studies

Original post by becky96

Did anyone get really confused with the first question? :L

Yes a bit

Reply 85

CurtisDean

11

Original post by becky96

Did anyone get really confused with the first question? :L

Extraneous variable etc one? I cant actually remember the first question lol. Im gonna go through it with my teacher on wednesday and try to post the unofficial markscheme. If that helps :smile:

Reply 86

Original post by CurtisDean

Extraneous variable etc one? I cant actually remember the first question lol. Im gonna go through it with my teacher on wednesday and try to post the unofficial markscheme. If that helps :smile:

Nono it was like why is Critical 00-49???? And yeah please do :biggrin:

What did you all get for the standard dev question?

Reply 87

Original post by becky96

Nono it was like why is Critical 00-49???? And yeah please do :biggrin:

What did you all get for the standard dev question?

It was 00-49 critical because in the first table, 40 patients had a critical condition which was HALF the patients who turned up (Out of 80) so it made sense to make it half the numbers from 1-99 that where critical... Thought that was kinda easy :P

EDIT: Then why would you go and Negative a explanatory helpful statement? Some people...

(edited 11 years ago)

Reply 88

rumenaislam

10

The stats exam today was easy, which probably mean I failed. :s-smilie:

Reply 89

you sounded cocky and it irritated me sorry

Reply 90

Original post by becky96

you sounded cocky and it irritated me sorry

Wow, I helped with a question that probably would have been overlooked by most people, can't i grant myself a little satisfaction?

Even then, I hope you did well in the exam! Sure you will still get an A or A*!

:hmmm:

Reply 91

-Ben

Original post by sm3lly2ooo

Yess it was okay. But I'm not sure if I've done all that well

I really want an a* and my coursework turned out 37/40 which puts me in a failry strong position I hope. But this paper was too easy if I want a high mark it's going to be a gamble!
I hope I do :frown:

I got 14.5% or something for that female question
I've messed up on the normal distribution and Dover one. I didn't out Dover and I put 1% forgetting it was 95% :frown:

.
I really hope I do well I need this :frown:

This was posted from The Student Room's iPhone/iPad App

Just remember that the Dover question was one mark. Not worth losing sleep over.

EDIT: Didn't realise there was a fifth page.. Uh, for the last question, I can remember adding together lots of fractions and I can't remember exactly what I got.. 0.64.. or something? dunno. ^_^

What did you guys get for the cumulative frequency question? It went something like: Calculate the amount of people that waited over 45 minutes for Dover and the other one..

(edited 11 years ago)

Reply 92

Original post by -Ben

Just remember that the Dover question was one mark. Not worth losing sleep over.

EDIT: Didn't realise there was a fifth page.. Uh, for the last question, I can remember adding together lots of fractions and I can't remember exactly what I got.. 0.64.. or something? dunno. ^_^

What did you guys get for the cumulative frequency question? It went something like: Calculate the amount of people that waited over 45 minutes for Dover and the other one..

I times'd those ones at the back as it was a AND situation so you times the two values together, you only added when it said the possibility of turning opposite directions and you had to Times the 2 possibles (0.25, 0.35 and 0.4 where the chances) and then add them all up.

EDIT:
http://people.richland.edu/james/lecture/m170/ch05-rul.html

Go to "AND" or intersections and independent events, i think that means like in this car example, it was multiplication as one choice of direction didn't affect the other event. It even said in the question, these where INDEPENDENT events.

Still, I'm not all too sure on it...

(edited 11 years ago)

Reply 93

Original post by Ali_Ludley

DEFINITELY 30-49 which meant it was the both bars added up to make something like 14, can't quite remember.

Yes it was 14.6

Reply 94

Original post by Ali_Ludley

Well last year they where really quite low at 68/100 for A* and 53/100 for an A but this paper was REALLY easy so I would say 85/100 for A* possibly and 70/100 for the A

Ok well It was probably easy for you because your probably a maths wizz but I thought it was ok. But wold it really jumpy 20%? I hope not!

Reply 95

Original post by Ali_Ludley

It was 00-49 critical because in the first table, 40 patients had a critical condition which was HALF the patients who turned up (Out of 80) so it made sense to make it half the numbers from 1-99 that where critical... Thought that was kinda easy :P

EDIT: Then why would you go and Negative a explanatory helpful statement? Some people...

Yes the first 12 marks were kinda easy. Although it got harder as the test went on but it wasn't easy.

Reply 96

What did you get for the last page? I got 0.15 in the 1st one and 0.45 in another and then 0.64? I think I got those wrong as i'm not as good?

Reply 97

Original post by Frostyjoe

What did you get for the last page? I got 0.15 in the 1st one and 0.45 in another and then 0.64? I think I got those wrong as i'm not as good?

0.15? D'ya mean 0.16??
The second one i found really confusing and got 0.0875 :L

Reply 98

Original post by becky96

0.15? D'ya mean 0.16??
The second one i found really confusing and got 0.0875 :L

Yeah thats what i got becky, it was multiplication of the probabilities which you did right? to get 0.0875? and that one after was something like 0.6something as you times'd the 4 sets of two possibilities and then added them together.

(edited 11 years ago)

Reply 99