1. Describe the goals of computer/network security.

Confidentialityensures that computerrelated assets are accessed only by authorized
parties. That is, only those who should have access to somethi
NATIONAL UNIVERSITY OF SINGAPORE
Department of Statistics and Applied Probability
2016/17 Semester 2
ST2137 Computer Aided Data Analysis
Tutorial 4
Three data sets (wip.txt, testscores.txt and furnitu
NATIONAL UNIVERSITY OF SINGAPORE
Department of Statistics and Applied Probability
2016/17 Semester 2
1.
ST2137 Computer Aided Data Analysis
Tutorial 7
A flexible working hour program permits employees
NATIONAL UNIVERSITY OF SINGAPORE
Department of Statistics and Applied Probability
2016/17 Semester 2
1.
2.
ST2137 Computer Aided Data Analysis
Tutorial 9
The probability density function of a double e
NATIONAL UNIVERSITY OF SINGAPORE
Department of Statistics and Applied Probability
2016/17 Semester 2
ST2137 Computer Aided Data Analysis
Tutorial 8
1.
An operations manager in a company that manufactu
NATIONAL UNIVERSITY OF SINGAPORE
Department of Statistics and Applied Probability
2016/17 Semester 2
ST2137 Computer Aided Data Analysis
Tutorial 6
1.
The purchasing director for an industrial parts f
NATIONAL UNIVERSITY OF SINGAPORE
Department of Statistics and Applied Probability
2016/17 Semester 2
ST2137 Computer Aided Data Analysis
Tutorial 10
Submit a softcopy of your solution in pdf format wi
Eight
One Sample Tests and
Two Sample Tests
293
8.1
O NE S AMPLE T EST FOR THE LOCATION
Parametric test
One sample ttest (normal populations)
Nonparametric tests
Sign test
Sign rank test
294
Tes
Seven
Analyzing Categorical
Data
233
7.1
W HAT IS A C ATEGORICAL VARIABLE ?
Examples:
Gender (Male" or Female").
Sick or well.
Success or failure.
Age group (Below 20", 20 to below 40", 40 to belo
Four
SPSS: An Introduction
102
4.1
W HAT IS SPSS?
Statistical Package for Social Sciences.
It is an interactive userfriendly statistical package.
It comprises of two parts
Data editor creating an
Five
Describing Numerical
Data
133
5.1
I NTRODUCTION
There are two major ways of describing numerical data:
Numerical descriptive measures
Location
Variability
Other measures
Graphical methods
H
Six
Robust Statistics for
Location and Scale
Parameters
212
6.1
W HY DO WE NEED R OBUST S TATISTICS ?
There may be outliers in the data.
Outliers are sample values that are considered very different
Three
R: An Introduction
60
3.1
W HAT IS R?
It is an integrated suite of software facilitates for data manipulation, calculation and graphical display. Among other things it has
An effective data han
Two
SAS: An Introduction
24
2.1
W HAT IS SAS?
It is a programming language composed of statements that specify
how data is to be processed and analyzed.
A SAS program consists of a sequence of SAS s
One
Introduction
1
1.1
O BJECTIVES
Here are some objectives of this course:
To appreciate statistics through analyzing data.
To solve real life problems through statistics.
To learn how to use stat