AQ077-3-2-PSMOD
Quiz 2
Name
: _________________________
TP Number
: ____________________
Intake
: ___________________________
Page 1 of 2
Total Marks
/ 10
Duration: 30 minutes
Answer all questions.
1.
2.
The age (year) for a group of people are:
12, 15, 10, 11, 9.
Find the mean, correct to 4 decimal places.
(2 marks)
The frequency distribution of the share price of 50 sample stocks is tabulated below:
Share Price
1 – 20
21 – 40
41 – 60
61 – 80
81 – 100
101 – 120
Total
Frequency
11
8
17
5
7
2
50
(a)
Compute, class mid-point (x), fx and fx2 for each class.
(b)
Compute
(i)
mean
(3 marks)
(2 marks)
(ii)
standard deviation
(3 marks)
Use this sheet to write your answers.
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Level 2
Asia Pacific University of Technology and Innovation
YYYY
AQ077-3-2-PSMOD
Quiz 2
Page 2 of 2
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Level 2
Asia Pacific University of Technology and Innovation
YYYY