Range Central Tendency Notes
Range and measures of central tendency (mean, median and mode) are
values that summarize a set of data. They are useful when analyzing data.
Sometimes there are extreme values that are separated from the rest of the
Association and Casualty Notes
How do you know that what you found in your research study is, in
fact, a general trend?
Does A really, always cause B?
If A happens, is B really as likely to happen as you claim? Always?
Under certain condi
Central Tendency Notes
Distributions, Percentiles, and Central Tendency
A percentile rank of a score is a single number that gives the percent of
cases in the specific reference group scoring at or below that score.
The mode is the score with th
Experiments and Quasi experiments Notes
An Experiment is
A controlled empirical test of a hypothesis.
A is bigger, faster, better than B
A causes B
A changes more than B when we do X
Independent variable that can be m
Linear Programming Notes
Mathematical programming is used to find the best or optimal solution
to a problem that requires a decision or set of decisions about how
best to use a set of limited resources to achieve a state goal of
Operations Research Notes
What is Operations Research?
The activities carried out in an organization.
The process of observation and testing characterized
by the scientific method. Situation, problem statement, model construction,
QUANTITATIVE RESEARCH METHODS Notes
Include a wide variety of laboratory and non-laboratory procedures
Populations and Sampling
Populations and Sampling
Solving the Mathematical Model Notes
Many tools are available as discussed in this course
Some lead to optimal solutions
Others only evaluate candidates trial and error to find best course
Example: Collect input data - nurse profiles and demand
Problem Solving Process Notes
Problem Solving Process
Goal: solve a problem
Model must be valid
Model must be tractable
Solution must be useful
May involve current operations or proposed developments due to
expected market shifts
Developing LP Model Notes
The variety of situations to which linear programming has been
applied ranges from agriculture to zinc smelting.
Determine the objective of the problem and describe it by a
criterion function in terms of the decis
Questionnaires and Surveys Notes
Questionnaires & surveys
Sample large populations (cheap on materials & effort)
Efficiently ask a lot of questions
LP Problems Notes
4. A Transportation Problem
A product is to be shipped in the amounts al, a2, ., am from m
shipping origins and received in amounts bl, b2, ., bn at each of n
The cost of shipping a unit from the ith origin to the
Constructing Model Notes
Constructing a Model
Problem must be translated from verbal, qualitative terms to logical,
A logical model is a series of rules, usually embodied in a computer
A mathematical model is a collection of fun
Assignment 1: Decision Analysis (Chapter 5)
Total marks: 20 marks Weight: 8%
Due Date: June 9, 2016
Computer Tool: TreePlan Excel Add-In.
Submit in class, hard copy only.
Assignment can be done in groups of up to 3 studen