stats project girls generation

7/28/2019 Stats Project Girls Generation

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STATISTICS PROJECT THE

INVESTIGATIONOF GIRLS

GENERATIONS POPULARITY

Minh Vu Jacob Roethel


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OBJECTIVEOF THE STUDY

Girls Generation is a 9 member girls group from

South Korea They are currently among the most successful

Girls Group in South Korea with large sales

volumes, numerous awards won

However, there are hints that the members in thegroup are not equally liked by fans


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OBJECTIVEOFTHESTUDY (CONT.)

Individual Members Thread Message sent on

Soshified.com (as of 9:30pm April 25th 2010)

(1) Taeyeon: 115,551

(2) Sooyoung: 45,947 (3) Sunny: 47,135

(4) Tiffany: 78,327

(5) Yuri: 70,430

(6) Hyoyeon: 30,697

(7) Jessica: 70,856

(8) Seohyun: 42,437

(9) Yoona: 77,616


4/18


Daum Fan Caf Ranking of Individual Korean Pop

artists (as of April 5th 2010)

(1) Taeyeon: #5

(2) Sooyoung: #50 (3) Sunny: #44

(4) Tiffany: #16

(5) Yuri: #26

(6) Hyoyeon: #63

(7) Jessica: #12

(8) Seohyun: #34

(9) Yoona: #8


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There are quite a difference between the above

numbers. Objective: Determine whether or not the members

of Girls Generation are equally like by fans.


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STATEMENTSOF NULLAND ALTERNATE

HYPOTHESES

Each member is a treatment

Fans are asked to grade each member in Girls

Generation

We are interested in comparing the 9 mean scoresof the 9 members

Ho: u1=u2=u3=u4=u5=u6=u7=u8=u9

H1: The mean scores are not equal


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DEFINITION & IMPACTOF TYPE 1 & 2 ERRORS

Type 1 Error: Rejecting the Null Hypothesis Howhen it is true

Impact: Might put some members into unnecessaryextra training session, pressure.

Type 2 Error: Accepting the Null Hypothesis whenit is false Unspoken Conflict


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SELECTIONOF

SIGNIFICANCE

LEVEL

Since this is a

Market Research

project => Level of

significance of 0.05


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IDENTIFICATIONOF POPULATION

The collection of all Scores

that all fans in the worldgive to (1) Taeyeon is

Population 1

The collection of all Scores

that all fans in the worldgive to (2) Sooyoung is

Population 2

And so on..


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SAMPLE SIZE CALCULATION

At Least 30 in order to satisfy

the Normal DistributionAssumption for ANOVA

Each respondents are requiredto give score for eachindividual member

=> Same group of peoplegrading each member results insame Standard Deviation foreach members set of score

=> Respondent As score for (1)

Taeyeon has nothing to do withhis/her score to (2) Sooyoungand so on. => Each membersset of score is independent.


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DATA COLLECTION METHOD

Survey: Ask each respondent to

grade each member in

terms of 4 attribute:

Singing, Dancing, Look,

Charisma Each attribute is worth 10

points. The Total score is

then added up from single

attribute and has a

maximum value of 40

This total score is what

constitutes the population

for each treatment.


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DATA COLLECTION METHOD (CONT.)


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DATA COLLECTION METHOD (CONT.)

Survey is designed using monkeysurvey.com. The

survey is also hosted by monkeysurvey.com

Use Soshified.com, Allkpop.com, Thaisoshi.com

and our personal networking to distribute the

survey.

We have 197 respondents from US, Korea,

Canada, Hong Kong, Thailand, Vietnam, China,

Philippines, Malaysia, Indonesia, Singapore,

Australia, Peru, Germany, Russia, Netherlands,New Zealand, Switzerland


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SELECTIONOF STATISTICAL TECHNIQUE

Since we are comparing 9 population means and

we have single factor, we are going to use One-way

ANOVA which involves the use of F-statistics

Using Excel/Data/Data Analysis/


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ANOVA TABLE

F critical

F observe


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RESULT/CONCLUSION

0.9604648 < 1.9600385 => F observe < F Crit

=> at level of significance of 0.05, we do

not reject the Null Hypothesis

We can conclude that all Girls Generation memberare equally liked by all the fans in the world. The

number at the fan forum is misleading.


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RECOMMENDATION

The company is on the right track. Keep on

promoting each member equally (have relatively

equal screen time, equal solo dance, equal singing

line, equal appearance on TV Shows)

stats project girls generation

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