Parametric Vs Non-parametric Tests
The population mean (), standard deviation
(s) and proportion (p) are called the
parameters of a distribution.
Tests of hypotheses concerning the mean and
proportion are based on
Characteristics of Students
The t-distribution has the following
It is continuous, bell shaped and symmetrical about
zero like the z-distribution.
There is a family of t-distributions with mean of
zero but different standard dev
Test of Significance of a Mean
Ho : X
Test of Significance for equality of Means
Ho : X1 X 2
X1 X 2
Testing for the Population Mean:
Large Sample and is known
In this case (n 30) the test
TESTING OF HYPOTHESES
What is a Hypothesis?
A hypothesis is an assumption or a statement that may or may not
The hypothesis is tested on the basis of information obtained from
Hypothesis tests are widely used in business and industry
Aquestionnaireis aresearchinstrument consistng
of a series ofquestonsand other prompts for the
purpose of gathering informatonfrom respondents.
Questonnaire is a document containing a list of
questons designed to solici
Meaning of Measurement and Scaling
Measurement: The term measurement means
assigning numbers or some other symbols to the
characteristics of certain objects.
When numbers are used, the researcher must
have a rule for assigning a number to an
Your family is planning for a social gettogether with relatives & friends [size = 25 members]
Your family members have delegated the
food arrangement work to you.
What would be your action plan to make the function
What is research?
Creative work undertaken on a systematic basis in order to
increase the stock ofknowledge, including knowledge of
humans, culture and society, and the use of this stock of
knowledge to devise new applica
India as Developing Economy
Present scenario of Indian Economy
Structure of Indian Economy
Contribution of different sectors
Growth of tertiary sector in recent years
Methods of es
Features, Nature & Scope
Business refers to the organized efforts of
the enterprises to produce & supply the
goods and services to earn profit.
It is constituted by numerous activit