Chap 16: Assignment 1 Answers

Question 1
(a) Pets
(b) Discrete. They are countable.
(d) 30%
(e) 15%

Question 2
(a) Phone Calls
(b) 48%
(c) 2
(d) Outlier

Question 3
(a) Minimum value =2
(b) Maximum value = 62
(c) 16
(d) 5
(e) 17.1% (as required in the instructions)

Question4
(a)  Stem-and-Left Diagram
Stem | Leaf
0 | 9
1 | 8
2 | 0 0 2 4 5 5 5 6 8 8 8 8 9
3 | 0 2 2 3 3 3 3 4 4 4 4 5 5 5 5 6 6 8 9
4 | 0 1 2 2 3 4 5 6 8 9
5 | 0

Key: 1|8 represents 18 marks

(b) In the stem-and-leaf diagram, data are grouped and all the original data are shown.
(c) Highest score is 50 while lowest score is 9
(d) 24.4% (3 SF)

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