Intermediate 2 : Statistics & Graphs Revision

2011 P2 Q6 / / 1
3
2
2011 P1 Q1 /
/ 1
1
1
2
1
2010 P2 Q4 / / 1
3
2
2009 P2 Q2 / / 1
3
2009 P1 Q5 / / 1
3
2
2008 P2 Q3 / / 4
1
3
1
Ans / (a) 14.8 (b)The Physics marks were more consistent than Maths marks since6.8 is less than 14.8
(c) (d) 58%
2007 P1 Q6 / / 3
1
Ans / (a) Proof (b)
2006 P2 Q5 / / 1
3
2
Ans / (a)(i) 20.5 (ii) 1.52 (b) Yes, since mean of 20.5 is between 19.4 and 20.6 and the S.D. of 1.52 <2
2005 P1 Q4 / / 1
1
1
2
Ans / (a)(i) 82 (ii) 78 (iii) 84.5 (b) 85 with explanation.
2005 P2 Q2 / / 3
1
Ans / (a) 6.6 (b)Yes weights are more consistent with new methods since 5.8<6.6
2004 P2 Q2 / / 1
3
1
1
Ans / (a)(i) 16.5 (ii) 1.87 (b)(i) 20.5 (ii) 1.87
2003 P1 Q4 / / 1
1
1
1
1
Ans / (a)(i) 27.5 (ii)13 (iii) 35 (b)11 (c) FASTCABS, since their waiting times are smaller, 2.5<11min
2003 P2 Q5 / / 1
3
2
Ans / (a) (i) 19 (ii) 3.65 (b) Yes, since 19 ºC lies between 15 ºC and 25 ºC and 3.65 ºC is less than 5ºC
2002 P1 Q5 / / 3
2
1
Ans / (a)QL=1.5, M=3, QU=4 (b) ***** (c) Number of visits at football more spread out than cinema
2002 P2 Q3 / / 4
2
Ans / (a) Mean=73 , S.D.=10.5 (b)Same mean but prices have greater spread in local shops, 17.7>10.5
2001 P2 Q2 / / 4
2
Ans / (a) mean = 60 , S.D. = 11 (b) Same mean but Group B have a greater spread since 29.811