QUESTION 1:
Consider program of obtaining blood groups from a simple random sample of 100 school leavers around Klang Valley as shown in Table.
Table 1:
Male
B AB A A B A B B AB A A B O O AB O
O A B O O B AB B A A B B AB A A B
AB A B O O B AB B A B O O O B A B
A O
Female
AB AB A B B A B B AB A A B AB O AB O
O A B O B B AB B A A B B AB A A B
AB A B O O B AB B A B O B O B A B
A AB
a) Prepare a multiple frequency table for blood groups of both genders.
b) Using your frequency table, draw a multiple bar chart to represent the information.
c) Make a comparison between genders for the following aspects:
i) Most common blood group
ii) Minimum frequency of blood group
iii) Maximum frequency of blood group.
QUESTION 2:
Data in Table represents the lifespan (in thousands Kilometers) for a sample of 34 tyres used in a factory.
Table:
56.1 56.9 58.2 57.0 57.6 56.5 56.6 56.4 58.0
56.7 56.8 58.9 57.8 57.6 56.8 56.8 56.7 58.9
56.8 61.9 54.5 60.2 55.3 58.0 56.5 62.2 56.2
58.7 54.8 57.8 61.0 57.8 59.2 60.3
Based on the data,
a) Construct a frequency distribution. Take 1.2 as a class width and 54.0 as a lower limit of the first class.
b) Draw a histogram and frequency polygon.
QUESTION 3:
Refer to the frequency table in Question (2a), calculate the following:
a) mean
b) mode
c) standard deviation
QUESTION 4:
Table shows the frequency distribution of the weight (in kg) of 65 rugby players of a university college.
Table 3:
Weight (kg)/ Frequency/
Berat (kg) Kekerapan
60 - 64 2
65 - 69 x
70 - 74 8
75 - 79 4x
80 - 84 5x
85 - 89 3
90 - 94 2
Determined:
a) the value of x
b) first quartile
c) median
d) third quartile.
e) inter-quartile range.