Tamil Nadu Open University (TNOU) 2009 B.A Economics Economic statistics - Question Paper
wsll
UG-651 BECAL-21/BBEAL-21B.A. DEGREE EXAMINATION - JUNE, 2009. Second Year (AY 2005-06 batch onwards) Economics/Business Economics
ECONOMIC STATISTICS Time : 3 hours Maximum marks : 75
PART A (3 x 5 = 15 marks)
Answer any THREE questions.
1. Mention any five important rules to be followed in the tabulation of data.
L_OT<1 ALL0UU@ZX GuX
<si_ui<s<s hGui UQw
2. What is coefficient of variation? What are its uses? LDmpummkU au* uw*<sot iumi?
3. What are irregular fluctuations in time series data? Explain.
wsll
UG-651 BECAL-21/BBEAL-21HPPZ Gprn
G*OT? OTffi0ffi.
4. What is meant by association of attributes? What are its types?
wsll
UG-651 BECAL-21/BBEAL-21uwqsJa TL@p Gprn g*ot? au* otssototU
T_p<S.
5. State and explain multiplication theorem of probability.
Qu0Uffi Gu0PZU otUs.
PART B (4 x 15 = 60 marks)
Answer any FOUR questions.
6. Draw the histogram for the following data :
Marks : 0 - 20 20 - 40 40 - 60 60 - 80 80 -100
No. of Students : 3 17 27 20 9
wsll
UG-651 BECAL-21/BBEAL-21i_|ot<1 iiji<s><s0 aQS
QffSUUL IIIJ<S.
VQuS : 0 - 20 20 - 40 40 - 60 60 - 80 80 -100
n"OT&IITOT
gSOU0 : 3 17 27 20 9
7. Compute mean, median and mode from the following data :
|
Frequency : 3 6 9 13 7 4 2 |
 |
AQis : 3 6 9 13 7 4 2
8. Compute the mean deviation from mean for the following data :
40, 45, 35, 40, 38, 40, 42, 45, 50, 35.
l3*i0 l_ot<1 Tmka
U<s<5U QUP.
40, 45, 35, 40, 38, 40, 42, 45, 50, 35.
9. What is skewness? What are its types? Explain the important measures of skewness.
CaLL ot? AU* i<s<sot iun0i?
UQlWnW CffiTLL
10. State and explain the important types of index numbers.
SLQLffiJw UQlW OTffi0ffi.
11. Compute Pearsons coefficient of correlation from the following data : l3*i0 l|ot jmkpU
Q<siU <siOIU<s|.
x : 15 20 35 45 50
y : 3 4 9 7 6
12. Define Normal distribution and explain its properties.
|u uijiai* CUsn u0. Au*
<5*<5OT| OTffi0ffi.
4 UG-651
|
Attachment: |
| Earning: Approval pending. |
