1
Operational Research,
Algorithms, and Methods
The term operations research (or operational research as appears in this book) was
introduced in England during World War II when British military leaders
ordered scientists to make decisions concerning the

Duality in Linear Programming
4
In the preceding chapter on sensitivity analysis, we saw that the shadow-price interpretation of the optimal
simplex multipliers is a very useful concept. First, these shadow prices give us directly the marginal worth
of an

Data
STA 9701, TIME SERIES: FORECASTING
AND STATISTICAL MODELING
Review on intro statistics
2
Data/variable types
Population versus sample
Population:
The entire collection of individuals/objects about
which information is desired.
Sample:
A subset of the

Random variable
A random variable (r.v.) is a real-valued function that
is defined on the sample space, S, of an experiment
Random variable
Discrete variable
STA 9701, TIME SERIES: FORECASTING
AND STATISTICAL MODELING
Our discussions are based on continuo

Introduction to R
What is R?
!
!
Why use R?
!
!
!
STA 9701, TIME SERIES: FORECASTING
AND STATISTICAL MODELING
A very powerful environment for statistical and graphical
data analysis
!
Free software
Simple, user-friendly interface
Easy to produce nice plot

My Contact Info
Name: Rongning Wu
Office: VC 11-235
Phone: 646-312-3404
Email: rongning.wu@baruch.cuny.edu
STA 9701, TIME SERIES: FORECASTING
AND STATISTICAL MODELING
Fall 2015
2
Textbook & Supplies
Grading
(Required) Time Series Analysis and its Applicat