INTERNATIONAL MASTER OF BUSINESS PROGRAM
Website: www.griggs.edu.vn Email:
Subject: BUAD555 Decision Science and Statistic for Managers
Class: GaMBA01.C02
Student: Truong Minh Chien, ID # 113408
Final Individual Assessment
TOPIC: APPLIED STATISTIC FOR BUSINESS AND
ORGANIZATION
INTRODUCTION
1 – Background :
Statistics in the business application is the performance of statistics probability theory to the realistic
business environment in order to serve purposes such as collection - data processing, sample surveys,
studies the relationship between phenomena, predict and help the CEO decision-making within the
specific business scene. As we all know in statistics business, it includes descriptive statistics and
statistical inference. Actually, in limited of this article, I only apply statistical inference to solve
problems specific topic request.
2 - Purpose
Applying statistical theory to solve exercises 2.2, 5.16 and 8.3 of the textbook. Since then draw the
lessons of experience and practical help for the operation of Son Trang Ly Limited Company.
3 - Progress
This report is realized bases upon below steps :
i. Understand and gather information
ii. Calculated and solve the Regression Equation
iii. Applied Excel and SPSS version 17
iv. Applied the Estimation Theory in Statistic
v. Draw the plots
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APPLIED STATISTIC AND ESTIMATION THEORY FOR ORGANIZATION
Execercise 2.2 The below information are data on the age of the patients visit the hospital A on

30-35 2 6.67 2 6.67
35-40 2 6.67 4 13.33
40-45 0 0 4 13.33
45-50 6 20 10 33.33
50-55 4 13.33 14 46.67
55-60 1 3.33 15 50
60-65 6 20 21 70
65-70 4 6.67 23 76.67
70-75 2 13.33 27 90
75-80 3 10 30 100
Total 30 100 / /
c. Histogram, and other frequency plots
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d. Comments on the age distribution of patients
From the above frequency graph (Frequency Histogram), we easily see the majority of patients visit
the hospital A on 20/8/2008 are greater than 45 years of age and under 65 years old. The amount of
patients under 40 years old and is at least 65 years of patient accounting for a small amount.
Particularly of patients from 45 to 50 years old and the patients age 60 to 65 increased sharply higher.
It shows the hospital A on health care for middle-aged or older and retired people or those who were
too old working age. Basing oneself on above frequency histogram, we can imagine more value-
added services for Hospital A such as life insurance for elderly people or drugs on specific diseases of
the elderly such as heart tonic, hypertension, diabetes doses drugs to increase market power or other
drugs increases the digestibility of etc ...
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INTERNATIONAL MASTER OF BUSINESS PROGRAM
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Exercise 5.16 The consumer rate of a local product at district A is 60%. After the marketing
campaign believed that the rate has increased. To test this idea, we randomly interviewed 400 people

(significant at 5%).
Exercise 8.3 The following data is the number of readers of a local newspaper (thousand person):
Year :
1996 1997 1998 1999 2000 2001 2002 2003 2004 2005 2006 2007
Readers :
53 65 74 85 92 105 120 128 144 158 179 195
Made a Least-Squares Trend Function and forecasts the total readers in 2008 and 2009 with 95%
confident interval.
Solve
Table 2 Readers of the newspaper related to time.
Năm t (time) y (x1000) t.y t
2
t
2
.y t
3
t
3
.y t
4
t
4
.y
1996 1 53 53 1 53 1 53 1 53
1997 2 65 130 4 260 8 520 16 1040
1998 3 74 222 9 666 27 1998 81 5994
1999 4 85 340 16 1360 64 5440 256 21760
2000 5 92 460 25 2300 125 11500 625 57500
2001 6 105 630 36 3780 216 22680 1296 136080
2002 7 120 840 49 5880 343 41160 2401 288120