Measures of Dispersion
Lecture - 5
1
Definition
Measures of dispersion are descriptive statistics
that describe how similar a set of scores are to
each other
The more similar the scores are to each other, the
lower the measure of dispersion will be
The le

QUANTITATIVE ANALYSIS
LECTURE - 2
Data and its types
Data:
The information collected
for any kind of
investigation.
Usually Numerical but can
be Qualitative.
Data and its types
Primary Data:
The initial material collected
during the research process.
The

Department of Business Administration
Course Title:
Course Code:
Pre-requisite Courses:
Credit Hours:
Semester:
Degree:
Quantitative Analysis
ASC141
Business Mathematics
Three (3)
Fourth (4)
BBA Program
Course Description:
The course includes introduction

Measures of Central Tendency
Lecture 4
1
Measures of Central Tendency
A measure of central tendency is a
descriptive statistic that describes the
average, or typical value of a set of scores
There are three common measures of
central tendency:
the mode
th

Quantitative Analysis
Lecture - 6
Coefficient of Variation (CV)
S
100
CV
X
Can be used to compare two or
more sets of data measured in
different units or same units but
different average size.
03:56:18 AM
2
Use of Coefficient of Variation
Stock A:
Ave

1. Frequency menu
a. Central tendency
b. Percentiles
c. Dispersion
d. Distribution
2. Explore
a. Basic descriptives
b. Boxplot
3. Visual Binning
4. Recode into different and same variables
5. Graphs
a. Bar
b. Pie
c. Histogram
6. Data menu
a. Select cases

One patients blood pressure, measured daily over several weeks, averaged
182 with a standard deviation of 5.3, while that of another patient averaged
124 with a standard deviation of 9.4. Which patients blood pressure is relatively more variable?

Following data relates to miles per gallon performance of an automobile, tested in a city & highway:
City Mean = 18.3 m/g S.D = 2.5 m/g
Highway Mean = 20.5 m/g
S.D = 2.5 m/g
Using Mean, S.D. & Coefficient of variation, what statement can you make about di