1. (a) Substantiate the statement, ‘Research
encompasses activities that increase the sum of human knowledge.
Or
(b) What are
the components of Research Design in Social sciences?
2. (a) What are the degrees and
types of correlation? How is Karl Pearson’s coefficient of correlation
calculated?
Or
(b)
What are the index numbers? How are they constructed and what are the main
difficulties in their construction?
3. (a)Explain the different approaches to
probability. Under what condition is the classical approach not appropriate to
employ?
Or
(b) The number
of defects per unit in a sample of 330 units of manufactured product was found
as follows:
No. of Defect:
|
0
|
1
|
2
|
3
|
4
|
No. of Units:
|
214
|
92
|
20
|
3
|
1
|
Fit a Poisson distribution to the data and test for goodness of fit, (given e-0.439 =0.6447).
4. (a) Memory capacity of 9 students was tested
before and after training. State at 5% level of significance whether the training
was effective from the following scores:
Student
|
1
|
2
|
3
|
4
|
5
|
6
|
7
|
8
|
Before
|
10
|
15
|
9
|
3
|
7
|
12
|
16
|
17
|
After
|
12
|
17
|
8
|
5
|
6
|
11
|
18
|
20
|
Or
(b) Distinguish between the
following:
Ø
Simple hypothesis and composite hypothesis.
Ø
Null hypothesis and alternative hypothesis.
Ø
One-tailed test and two-tailed tast.
Ø
Type I error and type II error.
5. (a) What are basic
requirements of a good research report?
Or
(b) In a
certain sample of 2000 families, 1400 families are consumers of tea.Out of 1800
Hindu families, 1236 families consume tea. Use Chi Square distribution to tea
whether there is any significance between consumption of tea among Hindu and
Non-Hindu families.