Decision analysis and modelling
June 2021
1.
Critically differentiate between Heteroscadasticity, Autocorrelation and
Multicollinearity with suitable examples.
Answer: Heteroscedasticity
Heteroscedasticity
occurs more often in datasets that have a large range between the largest and
smallest observed values. While there are numerous reasons why
heteroscedasticity can exist, a common explanation is that the error variance
changes proportionally with a factor. This factor might be a variable in the
model.
In some cases, the variance increases Its Half solved only
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2.
Explain the various approaches used for Investment Analysis.
Answer: Capital budgeting decisions are the most important decisions in
corporate financial management. These decisions make or mar a business organisation.
These decisions commit a firm to invest its current funds in the operating
assets (i.e. long-term assets) with the hope of employing them most efficiently
to generate
3.a.
In formulation of Linear Programing problems, we encounter various types of
constraints. Explain the constraints that are dealt with in LPP.
3.b.
In context of LPP formulation, explain the concept of decision variables with
suitable examples.
Answer: a) Linear programming focuses on obtaining the best possible output (or a
set of outputs) from a given set of limited resources. Minimal time and effort
and maximum benefit coupled with the best possible output or a set of outputs
is the mantra of any decision-maker. Today, decision-makers or managements have
to tackle the issue of allocating limited and scarce resources at various
levels in an organisation in the best possible manner. Man, money, machine,
time and technology
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