AQA A2 Mathematics (Old Spec) - Statistics 4 MS04 - 26 June 2018 [Exam Discussion]

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niamhdoesmaths
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AQA A Level Maths Discussion Thread - 2018 Edition

Hey guys, I thought I'd make this niiiiiice and early so we can all share how we're preparing for our Maths exams this year?

Statistics 4
Date: Tuesday 26th June 2018
Time: Morning
Duration: 1 hour 30 minutes
Days to go?: 50

Probably the most important way to prepare for maths is to do plenty of past papers! You can find the more recent papers hereand the older ones here.

Good luck with the preparations everyone, let the countdown commence! Image

Other AQA Exam Threads:
AQA AS Decision 1 (MD01) - 22nd June
AQA A2 Decision 2 (MD02) - 26th June
AQA AS Further Pure 1 (MFP1) - 13th June
AQA A2 Further Pure 2 (MFP2) - 22rd June
AQA A2 Further Pure 3 (MFP3) - 16th May
AQA A2 Further Pure 4 (MFP4) - 23rd May
AQA AS Mechanics 1 (MM1B) - 19th June
AQA A2 Mechanics 2 (MM2B) - 25th June
AQA A2 Mechanics 3 (MM03) - 6th June
AQA AS Statistics 1 (MS1B) - 6th June
AQA A2 Statistics 2 (MS2B) - 19th June
AQA A2 Statistics 3 (MS03) - 25th June
AQA AS Core 1 (MPC1) - 16th May
AQA AS Core 2 (MPC2) - 23rd May
AQA A2 Core 3 (MPC3) - 13th June
AQA A2 Core 4 (MPC4) - 15th June
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Eddy253
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Like MS03, hopefully I ain’t the only person on this thread...
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Eddy253
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How did everyone find it? What did people get for question 7?
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jlg444
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(Original post by Eddy253)
How did everyone find it? What did people get for question 7?
Thought it was nice tbh I got RE u wrt v as 3/2
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Eddy253
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(Original post by jlg444)
Thought it was nice tbh I got RE u wrt v as 3/2
Yeah I got 1.5 as well nice. Did you get 170 for minimum value of n on question 6?
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jlg444
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(Original post by Eddy253)
Yeah I got 1.5 as well nice. Did you get 170 for minimum value of n on question 6?
Yep n = 170
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Eddy253
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What did you get for 2019 phone box question?
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Eddy253
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I reckon it'll be 68 for 90UMS. Btw did you do S3 yesterday?
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jlg444
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(Original post by Eddy253)
What did you get for 2019 phone box question?
Cant remember the number exactly but i just did P(Y>365) so 1-F(365)
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jlg444
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(Original post by Eddy253)
I reckon it'll be 68 for 90UMS. Btw did you do S3 yesterday?
Yeah probably same as every year and nah
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Anonymouspsych
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that's crazy did u guys do s1 s2 s3 n s4? You must love stats
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Eddy253
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Which numbers do you remember so we can compare?
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jlg444
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(Original post by Eddy253)
Which numbers do you remember so we can compare?
Im not too good remembering but id recognise if you showed me some.
For the chi squared goodness of fit test I think I got 2.165 for the test statistic.
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(Original post by jlg444)
Im not too good remembering but id recognise if you showed me some.
For the chi squared goodness of fit test I think I got 2.165 for the test statistic.
Yes I got 2.165 and there were 4 degrees of freedom. I got -0.73 and 8.73 for a confidence interval. The other number I remember was 7.62 for the test statistic on the 2 standard deviations and H0 was accepted.
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(Original post by Anonymouspsych)
that's crazy did u guys do s1 s2 s3 n s4? You must love stats
We do indeed (well I do certainly). I'm actually better at mechanics than stats so I did stats to prove to myself that I can do it.
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jlg444
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(Original post by Eddy253)
Yes I got 2.165 and there were 4 degrees of freedom. I got -0.73 and 8.73 for a confidence interval. The other number I remember was 7.62 for the test statistic on the 2 standard deviations and H0 was accepted.
Yeah but they threw in a sneaky to one decimal place for the confidence interval so it was -0.7 , 8.7. Which question on the two sds was that the rural and urban walks one?
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Eddy253
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(Original post by jlg444)
Yep n = 170
Ah crap just remembered I put n>170 instead of n>=170. How many marks lost?
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(Original post by Eddy253)
We do indeed (well I do certainly). I'm actually better at mechanics than stats so I did stats to prove to myself that I can do it.
same mechanics is my favourite but it was a shame my school didn't do m3 and beyond. So I've only done M1 M2 S1 & S2
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jlg444
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(Original post by Eddy253)
Ah crap just remembered I put n>170 instead of n>=170. How many marks lost?
The question was what was the lowest integer so it wasnt an inequality just needed n=170
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(Original post by jlg444)
The question was what was the lowest integer so it wasnt an inequality just needed n=170
So how many marks lost in total given I made that mistake and didn't see 1dp on the confidence interval question? 4 or 5?
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