chapter 10 answers - pearson...
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© Pearson Education Limited 2009 1
Chapter 10 AnswersChapter 10 Answers 1 (a)
Faults 0 1 2 3 4 5 6 7
Frequency 6 5 9 13 6 5 4 2
(b)
2
3 90° 60° 210°
4 (a) 43.2 36 64.8 93.6 43.2 36 28.8 14.4
(b)
© Pearson Education Limited 2009 2
5 (a) 88 120 104 48
(b)
11
45
6 (a) (b)
Test A 15 35 34 23 35 27 36 20
Test B 20 37 35 25 33 30 39 28
Test A 34 23 24 30 40 25 35
Test B 36 27 24 33 35 27 32
(c) A strong positive correlation is evident between the two marks.
(d)
(e) 14
© Pearson Education Limited 2009 3
7 (a)
Goals 12 15 16 19 22 24 26 27 30 33
Points 8 9 13 18 17 21 20 21 25 24
(b) There is a strong positive relationship.
(c) (i) 23 points ±1
(ii) 16 goals ±1