ASSIGNMENT QUESTION

QUESTION 1

Consider program of obtaining blood groups from a simple random sample of 100 school leavers around Klang Valley as shown in Table 1.

                                                      Table 1/Jadual 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:

Most common blood group

Minimum frequency of blood group

Maximum frequency of blood group.

QUESTION 2

Data in Table two represents the lifespan (in thousands Kilometers) for a sample of 34 tyres used in a factory.

Table 2

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 3 shows the frequency distribution of the weight (in kg) of 65 rugby players of a university college.

Table 3

Determined:

a) the value of x

b) first quartile

c) median

d) third quartile.

e) inter-quartile range.