AQA AS Statistics 3 9th June 2015 - After Exam

Watch
JamestheYorks
Badges: 0
Rep:
?
#1
Report Thread starter 6 years ago
#1
Hey everyone how did the exam go and what answers did you get.
I know the nature of the exam means it's hard to remember full answers but hopefully we can piece together some.
0
reply
tobywaxman
Badges: 1
Rep:
?
#2
Report 6 years ago
#2
Hey can someone in this thread help me do this question, on the aqa exam board but may be on both
Image
Attached files
0
reply
Alltxmelow
Badges: 2
Rep:
?
#3
Report 6 years ago
#3
I messed up on the contingency table question (question 2) I got a t.s of 0.07 and a c.v of 6.6 the t.s just doesn't seem right to me?
0
reply
em1ly123
Badges: 1
Rep:
?
#4
Report 6 years ago
#4
(Original post by douglas merritte)
Are you talking about SS03?
I just recalculated the T.S for that contingency table question for another thread, and got 21.367
i got around 9 for my test statistic, which equation did you use? i used the |o-e|-0.5)^2 divided by E
0
reply
JamestheYorks
Badges: 0
Rep:
?
#5
Report Thread starter 6 years ago
#5
(Original post by em1ly123)
i got around 9 for my test statistic, which equation did you use? i used the |o-e|-0.5)^2 divided by E
Yeah me to 9.29
0
reply
em1ly123
Badges: 1
Rep:
?
#6
Report 6 years ago
#6
(Original post by douglas merritte)
Oh man, maybe I got it wrong! Do you remember if there was a total of 65 people interviewed, is that right?
yeah 65 is ringing a bell in my head
0
reply
em1ly123
Badges: 1
Rep:
?
#7
Report 6 years ago
#7
(Original post by JamestheYorks)
Yeah me to 9.29
just checked my calculator because left it in there haha, 9.2961 is what i got
0
reply
Alltxmelow
Badges: 2
Rep:
?
#8
Report 6 years ago
#8
After doing |o-e|-0.5 did anyone get 0.54^2 for all 4? I had a total 65 so I'm hoping I didn't drop too many marks
0
reply
stelios98
Badges: 1
Rep:
?
#9
Report 6 years ago
#9
Here are the answers I got guys, I will give the t.s and c.v:
1. 0.809>0.6581 --> reject H0
2. 9.30>6.635 --> reject H0
3. Tmin=21, 18>11 --> accept H0
4. r=0.767, r=-0.544, c.v=+-0.6833 so reject H0 for the 1st, accept H0 for the 2nd, sign test: 0.50>10% --> accept H0
5. 12.8>11.345 --> reject H0
6. 9<13 --> reject H0, 13>11 --> accept H0
0
reply
Alltxmelow
Badges: 2
Rep:
?
#10
Report 6 years ago
#10
(Original post by stelios98)
Here are the answers I got guys, I will give the t.s and c.v:
1. 0.809>0.6581 --> reject H0
2. 9.30>6.635 --> reject H0
3. Tmin=21, 18>11 --> accept H0
4. r=0.767, r=-0.544, c.v=+-0.6833 so reject H0 for the 1st, accept H0 for the 2nd, sign test: 0.50>10% --> accept H0
5. 12.8>11.345 --> reject H0
6. 9<13 --> reject H0, 13>11 --> accept H0
Yeah that's pretty much what I got expect my t.s was wrong for question two and so my conclusion was wrong. Hopefully I've only dropped around 2 marks
0
reply
JamestheYorks
Badges: 0
Rep:
?
#11
Report Thread starter 6 years ago
#11
(Original post by stelios98)
Here are the answers I got guys, I will give the t.s and c.v:
1. 0.809>0.6581 --> reject H0
2. 9.30>6.635 --> reject H0
3. Tmin=21, 18>11 --> accept H0
4. r=0.767, r=-0.544, c.v=+-0.6833 so reject H0 for the 1st, accept H0 for the 2nd, sign test: 0.50>10% --> accept H0
5. 12.8>11.345 --> reject H0
6. 9<13 --> reject H0, 13>11 --> accept H0
With a couple of slight rounding differences that's exactly what i got
0
reply
tipusultan
Badges: 1
Rep:
?
#12
Report 6 years ago
#12
My answers - don't know if correct:1) a) r=0.809 b) PMCC, Reject Ho CV=0.6581 c) No girls included or no unhealthy included2) a) Contingency Yates, TS=9.3 CV=6.635, Reject Ho3) a) Min =21b) Ua=18 (also TS) Ub=38, CV=11, Accept Ho4)a) i) rs=0.767 ii) rs=-0.544bi) 2 tailed CV= +/- 0.6833 Reject Hoii) Accept Hoc) TS=4 CR<=2 accept Ho5) a) Rank Totals 60.5 18.5 88 86H=12.8 cv=11.345 Rejec Ho6) a) T+=9(TS) T-=96 2 tailed cv=13 9<13 reject Hob) T+=13(TS) T-=42 1 tailed cv=11 13>11 accept Ho
0
reply
X

Quick Reply

Attached files
Write a reply...
Reply
new posts
Back
to top
Latest
My Feed

See more of what you like on
The Student Room

You can personalise what you see on TSR. Tell us a little about yourself to get started.

Personalise

Are you tempted to change your firm university choice on A-level results day?

Yes, I'll try and go to a uni higher up the league tables (61)
29.19%
Yes, there is a uni that I prefer and I'll fit in better (15)
7.18%
No I am happy with my choice (117)
55.98%
I'm using Clearing when I have my exam results (16)
7.66%

Watched Threads

View All