Mark Scheme (Results) January 2012 - Bland
Mark Scheme (Results) January 2012 - Bland
Mark Scheme (Results) January 2012 - Bland
You also want an ePaper? Increase the reach of your titles
YUMPU automatically turns print PDFs into web optimized ePapers that Google loves.
Question Working<br />
Number<br />
4(a) ∑ f × x = 12.5× 20 + 30× 11+ 37.5× 27 + 50× 15 + 75× 15 + 95×<br />
12 (= 4607.5)<br />
(having at least two correct products in 6 summed products)<br />
"4607.5"<br />
100<br />
Answer: 46.1 <strong>Mark</strong>: 3<br />
Notes<br />
M1<br />
M1 (DEP)<br />
A1<br />
Question Working Answer <strong>Mark</strong> Notes<br />
Number<br />
4(b) Interval Frequency<br />
Density<br />
Given height and<br />
width drawn.<br />
0≤ t < 25 0.8<br />
25 ≤ t < 35 1.1<br />
35 ≤ t < 40 5.4<br />
40 ≤ t < 60 0.75 (given)<br />
60 ≤ t < 90 0.5<br />
90 ≤ t < 100 1.2<br />
4<br />
B4 (-1eeoo)<br />
Question Working Answer <strong>Mark</strong> Notes<br />
Number<br />
5(a) 1<br />
3 , 33.3%, 0.333 B1<br />
1<br />
Question Working Answer <strong>Mark</strong> Notes<br />
Number<br />
5(b) 1 1 1 1<br />
× + × (one correct pair of<br />
M1<br />
3 3 3 2<br />
probabilities)<br />
(adding 2 nd correct pair of<br />
probabilities)<br />
M1 (DEP)<br />
Conclusion with no wrong working<br />
seen<br />
3<br />
A1<br />
International GCSE Mathematics (4MB0) Paper 01 <strong>January</strong> <strong>2012</strong>
Change language