5-412-754
JACK BOEPPLE
Samsung Electronics:
Analyzing Qualitative Complaint Data
We must understand variation.
W. Edwards Deming
April 3, 2012, found Samsung Electronics quality director Kevin Sarni wondering what he
could do to stop the flow of bad news

CASE STUDY I-5
Data Governance at InsuraCorp
InsuraCorp has several business units that provide financial products, services, and support for one or more of the
companys three major lines of business: (1) individual
insurance, such as term life, universal

PROBABILITY
What is Probability?
-Probability is the measure of the likeliness that an event will occur.
-Many events can't be predicted with total certainty. The best we can
say is how likely they are to happen, using the idea of probability.
-Probabilit

MAT271E
Probability and Statistics
Dr Ceyhan Kahya
PS1. Set Theory
(Definitions, Venn Diagrams, Set
Operations, Theorems, De Morgans Law)
Terminology for P&S
Trial: each time you repeat an experiment
Set: a well-defined collection of unique object (data

Statistics
(Sampling Theory)
Some Definitions of Sampling
Theory
Population (Universe): A group of individuals under study is called a
population or universe. Population size is denoted by N. If N is finite then it
is called a finite population. If N is

Statistics
(Statistical Decisions and Hypotheses,
Test of Hypotheses)
STATISTICAL DECISION
Statistical Decisions:
Statistical decisions are decisions made on the basis of observations of a phenomenon
that obeys probabilistic laws that are not completely k

The Uniform Distribution
A random variable X is said to be uniformly distributed in a x b if its density
function is:
f (x) =
1/(b-a)
axb
0
otherwise
The distribution function is given by:
F(x) = P(X x) =
0
(x-a)/(b-a)
1
x<a
ax<b
xb
The Cauchy Distributio

Tree Diagrams:
Calculating probabilities can be hard, sometimes you add them, sometimes you multiply
them, and often it is hard to figure out what to do . tree diagrams to the rescue!
A probability tree diagram shows all the possible events. The first eve

Statistics-Cont.
(Sampling Theory-Cont., Estimation
Theory )
Central Limit Theorem (CLT):
Remind:
The Central Limit Theorem basically says that for non-normal data, the
distribution of the samples means has an approximate normal distribution
with the mean

WEEK 5
Probability-cont.
(Chebyshev Inequality, Other Measures of
Central Tendency and Dispersion,
Skewness and Kurtosis, Some Special
Probability Distributions)
Chebyshev Inequality
Remember: Variance describes how spread apart the values of a random var

Concept of Probability
(Review of Set Theory, Random variables, Axioms,
Theorems, Conditional probability, Bayes Theorem,
Counting Techniques, Tree Diagrams)
Terminology for Probability
Trial: each time you repeat an experiment
Set: a well-defined colle

Statistics-Cont.
(Confidence Level and Intervals)
ESTIMATION THEORY
Remind:
There are two types of estimates for parameters:
Point estimate (given by a single number)
Its is difficult to find and its reliability?!
Interval estimate (by two numbers betwe

Probability-cont.
(Continuous Probability Distributions,
Joint Distributions, Expectation, Variance
and Std. Dev. of a Random Variable,
Standartization, Covariance)
Continuous Probability Distributions
Remember: a continuous random variable is the one whi

stanbul Teknik niversitesi - Dr. Umut Asan
1
stanbul Teknik niversitesi - Dr. Umut Asan
2
statistie Neden htiya Duyarz?
Deikenlik ve eitlilik sz konusu olmasayd istatistiksel
yntemlere gerek kalmazd.
U. ok Deikenli statistiksel Analiz
Deikenlii tanmlama

18 December 2015
1 hour
Full points: 10
ECN 201E Intermediate Microeconomics Quiz 3 Solutions
Answer the question below. Make sure to show all your working and calculations for
significant partial credit. You must show all the steps that you did to get to

YTU-Iktisat Istatistik II
'
Merkezi Limit Teoremi
1
$
IT
TEOREMI (CENTRAL LIMIT THEOREM)
MERKEZI LIM
X1 , X2 , . . . , Xn herbirinin ortalamas ve varyans 2 olan ve ayn
da
glma uyan n tane ba
gmsz r.d. olsun. Baska bir sekilde ifade
etmek istersek:
Xi

Quality management
and planning tools
(N7)
Dr.Ing.SeydaSerdarAsan
What does Team mean to you?
Together
Everyone
Achieves
More
SSA
1
Team
Ateamcomprisesagroup ofpeoplelinkedina
common purpose.
Teamsareespeciallyappropriatefor
conductingtasksthatarehigh

tkgWE$fi% mo
m
XgilglEWlg it 2 E% 1 E
1. The joint density function of X and Y is given by
2exe"2y 0<x<oo,0< <oo
mw% y
0 otherwise
Please compute (a) P(X> 2, Y < 2); (b) P(X> Y); (c)P(1 <X< 4). (15%)
2. X is a random variable of a F distribution with d

3.6. Baz Srekli Dalmlar
3.6.1 Normal Dalm
Normal dalm hem uygulamal hem de teorik istatistikte kullanlan olduka nemli bir
dalmdr. Normal dalmn istatistikte nemli bir yerinin olmasnn nedeni, yaplan birok
gzlem sonucunun, an biiminde bir dalm vermesi ve ou

Probability and Statistics
Mat 271E
Yard. Do. Dr. Tarkan Erdik
Probability Distributions
Uniform and Normal Distributions- Week 7
1
Probability Distributions
It has been observed that certain functions F(x) and f(x) can
successfully express the distributi

Probability and Statistics
Mat 271E
Yard. Do. Dr. Tarkan Erdik
Regression analysis- Week 12
1
2
When there are two or more variables, there may be some
realitionship between (or among) the variables.
In the presence of randomnes, the relationship between