SEHH1006 Mathematics and Statistics for College Students Semester 1, 2019/2020 Question BZ A researcher wanted to find out the percentage of low...
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SEHH1006 Mathematics and Statistics for College Students
Semester 1, 2019/2020
Question BZ
A researcher wanted to find out the percentage of low income families in Hong Kong. To do so, 3
families were randomly selected from each of the 19 districts in Hong Kong to participate in a
survey. Questionnaires were then sent to these families by post. Questions asked were about the
monthly household income (in HK$100), number of family members and the opinion (Good,
Average or Bad) about government's policy to help low income families.
(a) What is population of this study?
(2 marks)
(b) What is the sampling method of this study?
(2 marks)
(c) What is the level of measurement of the data collected for the variable &quot;monthly household
income (in HK$ 100)&quot;?
(2 marks)
(d) The collected data for monthly household income (in HK$100) were further summarised in the
following Ogive.
60
55
50
45
Cumulative Frequency
40
35
25
15
10
215
40.9
92.5
105.5
Monthly Household Income (in HK$ 100)
Find the following:
(6 marks)
(I)
Class width
(11)
Class midpoint of the 3&quot; class
Frequency of the 5&quot; class
( iv)
Lower class boundary of the 4&quot; class
(V)
Upper class Innn of the ?&quot; class
CS
Scanned with
Relative frequency of the (&quot; class. (Correct your final answer to ? decimal places)
CamScanner
- End of Section B

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