1. M I C R O S O F T X B O X 3 6 0 A N D S O N Y P L A Y S T A T I O N 3
Statistics Assignment

2. By
Dipesh Sanspara

3. Sony Playstation 3
 Sony Corporation commonly referred to as Sony, is a
Japanese multinational conglomerate corporation headquartered in
Kōnan Minato, Tokyo, Japan. Its diversified business is primarily focused on the
electronics, game, entertainment and financial services sectors. The company is one of
the leading manufacturers of electronic products for the consumer and professional
markets. Sony is ranked 87th on the 2012 list of Fortune Global 500.
 The first console in the series, the PlayStation, was the first video game console to ship
100 million units, 9 years and 6 months after its initial launch. Its successor,
the PlayStation 2, was released in 2000. The PlayStation 2 is the best-selling home
console to date, having reached over 150 million units sold as of January 31, 2011.
 Sony's latest console, the PlayStation 3, was released in 2006 has sold over 80 million
consoles worldwide. The PlayStation 3 has been produced in various models: the original,
the Slim, and the Super Slim. The PS3 officially went on sale in India on 27 April 2007,
priced at Rs. 39,990 ($1000 at the conversion rate that time) for the 60 GB version.
 The PlayStation 4 (PS4) is an upcoming video game console from Sony Computer
Entertainment announced at a press conference on February 20, 2013.

4. Microsoft Xbox 360
 Microsoft Corporation is an American multinational software corporation headquartered
in Redmond, Washington that develops, manufactures, licenses, and supports a wide
range of products and services related to computing. The company was founded by Bill
Gates and Paul Allen on April 4, 1975. Microsoft is the world's largest software
maker measured by revenues. It is also one of the world's most valuable companies.
 The Xbox 360 is the second video game console developed by and produced
for Microsoft and the successor to the Xbox. The Xbox 360 competes
with Sony's PlayStation 3 and Nintendo's Wii as part of the seventh generation of video
game consoles. As of June 30, 2013, 78.2 million Xbox 360 consoles have been sold
worldwide. The Xbox 360 was released on November 22, 2005, in the United States and
Canada.
 Launch of Xbox 360 (20 GB) – Rs. 26,999.

6. Questionnaire
Sr no. Variables Song PS3 Xbox 360
1 Value for money
2 Graphic Quality
3 Audio Quality
4 Gameplay
5 Comfort of the controller
6 Storage capacity
7 Availability of games
8 Physical appearance
9 Brand Loyalty
10 After sales service

7. Research Methodology
 A questionnaire was prepared of two brands using
different commonly known variables.
 People were asked to rate the brands on a scale of 1 to 5
(1 being the lowest and 5 highest.)
 Each member had 10 people to ask and hence the
sample size taken into consideration was 50.
 The average/mean was calculated, and was then used
for further calculations.

8. Rating Analysis
Sr no. Variables Sony PS3 Xbox 360
1 Value for money 3.56 2.22
2 Graphic Quality 3.78 3.60
3 Audio Quality 3.04 3.62
4 Gameplay 3.34 3.94
5 Comfort of the controller 4.18 2.52
6 Storage capacity 3.54 4.00
7 Availability of games 4.82 4.06
8 Physical appearance 3.94 2.84
9 Brand Loyalty 3.62 3.12
10 After sales service 2.90 2.66

9. Mean
 Arithmetic mean is commonly referred to as
"average" or simply as "mean".
 A mathematical representation of the typical value of
a series of numbers, computed as the sum of all the
numbers in the series divided by the count of all
numbers in the series.
 Formula, Arithmetic Mean = Σx/n

10. Example of Mean
Sr no. Variables Sony PS3 Xbox 360
1 Value for money 3.56 2.22
2 Graphic Quality 3.78 3.60
Interpretation:
Mean rating of value for money and graphic quality is higher
for Sony PS3 than Xbox.

11. 0
1
2
3
4
5
6
Value for
money
Graphic
Quality
Audio Quality Gameplay Comfort of
the controller
Storage
capacity
Availability of
games
Physical
appearance
Brand
Loyalty
After sales
service
Comparison of Mean
Song PS3
Xbox 360

12. Overall Mean
3
3.1
3.2
3.3
3.4
3.5
3.6
3.7
3.8
Sony PS3 Xbox 360
Overall Mean

13. MEDIAN
 The middle number in a sorted list of numbers. To
determine the median value in a sequence of
numbers, the numbers must first be arranged in
value order from lowest to highest. If there is an odd
amount of numbers, the median value is the number
that is in the middle, with the same amount of
numbers below and above. If there is an even
amount of numbers in the list, the middle pair must
be determined, added together and divided by two to
find the median value.

14. Example of Median
Sr no. Variables Sony PS3 Xbox 360
1 Brand Loyalty 4 3
Median = 25th Obervation + 26th Obervation/2
Interpretation:
The median of Sony PS3 is 4, which is higher than Xbox 360.

15. MODE
 The mode is the number that is repeated more often
than any other in a set of data.
 Ratings for Storage Capacity:
1) PS3: 1, 2, 2, 2, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3 ,3
,3, 3, 3, 3, 3, 4, 4, 4, 4,4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4,4, 4, 4, 4, 4,
4, 4, 4, 4, 5, 5, 5.
Mode is 4.
2) Xbox 360:
3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4,
4, 4, 4, 4, 4, 4, 4, 4, 4, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5.
Mode is 4

16. STANDARD DEVIATION
 It is a measure of how much spread or variability is
present in the sample. If all the number in the
sample are very close to each other in such cases
SD is zero (0) and if the numbers are well
dispersed than SD tends to be large. It is calculated
as:
 Standard Deviation (б) = ∑( x-x )
n-1

17. Example of Standard Deviation
Variable PS3 XBox
Graphic Quality 0.509 0.468
Interpretation:
The Standard deviation of in case ofPS3 is higher than
Xbox.

18. Correlation Co-efficient
 A measure that determines the degree to which two
variable's movements are associated.
 Co-efficient of Correlation(r) = ∑ x y
∑x² . ∑y²
Variables PS3 Xbox 360
Gameplay & Graphic
Quality
0.29 0.21

19. Correlation of Co-efficient
Interpretation:
They both show positive correlation.

20. SKEWENESS
• Measures of asymmetry of data
– Positive or right skewed: Longer right tail
– Negative or left skewed: Longer left tail
• Formula:-
Skewness = 3(Mean-Mode)
Std deviation
Variable PS3 Xbox 360
Availability of Games 5.7 4.26

21. Conclusion
 The conclusion so drawn from the data was that both the
gaming consoles are rated differently on the basis of
different variables. So it can be concluded, that depending
on customers priority for a particular variable the person
could pick up his favoured console.