Quantitative Methods for Business Alternative Assessment 2020/21

QUANTITATIVE METHODS FOR
BUSINESS ALTERNATIVE
ASSESSMENT 2020/21

TABLE OF CONTENTS
TABLE OF CONTENTS.................................................................................................................2
QUESTION 1...................................................................................................................................3
a........................................................................................................................................................3
I. Mean:........................................................................................................................................3
II. Standard Deviation:.................................................................................................................3
III. Interpretation:.........................................................................................................................3
b........................................................................................................................................................3
c........................................................................................................................................................4
Question 3........................................................................................................................................5
I....................................................................................................................................................5
II...................................................................................................................................................6
III.................................................................................................................................................6
b........................................................................................................................................................6
I....................................................................................................................................................6
II...................................................................................................................................................6
Question 4........................................................................................................................................7
a........................................................................................................................................................7
b........................................................................................................................................................7

Question 1
a.
Frequency
(f)
x fx (x-x̄ ) (x-x̄ )2 (x-x̄ )2*f
30 but less than
35
17 32.5 552.5 -11.96 143.0416 2431.707
35 but less than
40
24 37.5 900 -6.96 48.4416 1162.598
40 but less than
45
19 42.5 807.5 -1.96 3.8416 72.9904
45 but less than
50
28 47.5 1330 3.04 9.2416 258.7648
50 but less than
55
19 52.5 997.5 8.04 64.6416 1228.19
55 but less than
60
13 57.5 747.5 13.04 170.0416 2210.541
Total 120 5335 7364.792
I. Mean:
Mean = Σfx/Σf = 5335 /120 = 44.46
II. Standard Deviation:
Standard Deviation = √∑(x-x̄ )2*f/(n-1) √7364.79/ (6-1) = 85.82/5 = 17.164
III. Interpretation:
b.
Simple random sampling: This is form of the probability sample technique whereby
researchers randomly picks subset among participants out of whole population. Every participant
within population bear equal probability of getting selected. Then, Data gathered out of like a
large percent/part as probable of such random subset.
Quota sampling: This can be characterized as method sampling of non-probability where a
sample which contains individual who represent population which is generated through