1. Choose the correct option/Answer the following: 1x8=8
- Direct personal investigation is related to
- Index number.
- Secondary data.
- Primary data.
- Government data.
- Which formula is not used to calculate arithmetic mean?
- Which concept in statistics is shown in percentage?
- Geometric mean.
- Mode.
- Index number.
- Range.
- Coefficient or variation is related to quartile deviation.
- Yes.
- No.
- Which of the following is not a measure of dispersion?
- Mean deviation.
- Harmonic mean.
- Range.
- Interquartile range.
- Show is percentage:
- Index number measures
- National income.
- Cost of living.
- Agricultural production.
- Rate of employment.
- Exit poll findings are based on
- Random sample of universe.
- Complete survey of the universe.
- Quota sample of the universe.
- None of the above.
2. Write short notes on any four of the following (within 150 words each): 4x4=16
- Primary data.
- Arithmetic mean.
- Quartile deviation.
- Random sampling.
- Uses of index number.
3. (a) Distinguish between primary and secondary data. Which one is reliable? What information or data, you collect from the students of a college to know the family background and academic aspect of the students? 4+1+6=11
Or
(b) Distinguish between classification and tabulation of data. Illustrate the components of a table with an example. 5+6=11
4. (a) Define median and mode. Explain how these measures are calculated in case of ungrouped and grouped data. 4+7=11
Or
(b) Calculate Arithmetic Mean and Median from the following data: 5+6=11
Daily Wages
|
No. of Workers
|
20-30
30-40
40-50
50-60
60-70
70-80
80-90
|
5
15
28
42
15
12
3
|
5. (a) What is dispersion? What are its measures? Mention the merits and demerits of mean deviation and standard deviation. 2+3+6=11
Or
(b) Calculate Standard Deviation from the following data:
Daily Wages
|
No. of Workers
|
30-40
40-50
50-60
60-70
70-80
80-90
90-100
|
1
4
14
20
22
12
2
|
6. (a) What is Index Number? Explain the various problems involved in the construction of Index Number. 2+9=11
Or
(b) Calculate Price Index Number for the year 2013 by using (i) Laspeyres and (ii) Fisher’s Ideal Index from the following data: 5+6=11
Goods
|
Price
|
Quantity
| ||
2013
|
2012
|
2013
|
2012
| |
A
B
C
D
|
10
20
15
22
|
20
40
30
44
|
100
200
150
220
|
50
100
75
110
|
Also Read: Dibrugarh University Question Papers
7. (a) What is interpolation? Explain the different methods of interpolation. 2+10=12
Or
(b) Using an appropriate formula for interpolation, estimate the expectation of life at the age of 16 years by using the following data: 12
Age (in years):
|
10
|
15
|
20
|
25
|
30
|
35
|
Expectation of life (in years):
|
35.4
|
32.3
|
29.2
|
26.0
|
23.2
|
20.4
|
***