12th Economics Book Back Question and Answer Tamil Medium & English Medium
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12th Economics Book Back Question and Answer Tamil Medium & English Medium
- Chapter 12 Introduction to Statistical Methods and Econometric
1. The word ‘statistics’ is used as
__________.
(a) Singular.
(b) Plural
(c) Singular and Plural.
(d) None of above.
2. Who stated that statistics as a science of
estimates and probabilities.
(a) Horace Secrist.
(b) R.A Fisher.
(c) Ya-Lun-Chou
(d) Boddington
3. Sources of secondary data are
___________.
(a) Published sources.
(b) Unpublished sources.
(c) neither published nor
unpublished sources.
(d) Both (A) and (BOne
4. The data collected by questionnaires
are_____________.
(a) Primary data.
(b) Secondary data.
(c) Published data.
(d) Grouped data.
5. A measure of the strength of the linear
relationship that exists between two
variables is called:
(a) Slope
(b) Intercept
(c) Correlation coefficient
(d) Regression equation
6. If both variables X and Y increase
or decrease simultaneously, then the
coefficient of correlation will be:
(a) Positive
(b) Negative
(c) Zero
(d) One
7. If the points on the scatter diagram
indicate that as one variable increases
the other variable tends to decrease the
value of r will be:
(a) Perfect positive
(b) Perfect negative
(c) Negative
(d) Zero
8. The value of the coefficient of correlation
r lies between:
(a) 0 and 1
(b) -1 and 0
(c) -1 and +1
(d) -0.5 and +0.5
9. The term regression was used by:
(a) Newton
(b) Pearson
(c) Spearman
(d) Galton
10. The purpose of simple linear regression
analysis is to:
(a) Predict one variable from another
variable
(b) Replace points on a scatter
diagram by a straight-line
(c) Measure the degree to which two
variables are linearly associated
(d) Obtain the expected value of the
independent random variable for
a given value of the dependent
variable
11. A process by which we estimate the
value of dependent variable on the
basis of one or more independent
variables is called:
(a) CorrSpearsman
(b) Regression
(c) Residual
(d) Slope
12. If Y = 2 - 0.2X, then the value of Y
intercept is equal to
(a) -0.2
(b) 2
(c) 0.2X
(d) All of the above
13. In the regression equation Y = β0
+β1
X,
the Y is called:
(a) Independent variable
(b) Dependent variable
(c) Continuous variable
(d) none of the above
14. In the regression equation Y = β
0
+β1
X,
the X is called:
(a) Independent variable
(b) Dependent variable
(c) Continuous variable
(d) none of the above
15. Econometrics is the integration of
(a)Economics and Statistics
(b) Economics and Mathematics
(c)Economics, Mathematics and
Statistics
(d) None of the above
16 .Econometric is the word coined by
(a) Francis Galton
(b) RagnarFrish
(c) Karl Person
(d) Spesubjects
17. The raw materials of Econometrics
are:
(a) Data
(b) Goods
(c) Statistics
(d) Mathematics
18. The term Uiin regression equation is
(a) Residuals
(b) Standard error
(c) Stochastic error term
(d) none
19. The term Uiis introduced for the
representation of
(a) Omitted Variable
(b) Standard error
(c) Bias
(d) Discrete Variable
20. Econometrics is the amalgamation of
(a) 3 subjects
(b) 4 subjects
(c) 2 subjects
(d) econometrics
Part-B
Answer the following in one or two sentences
21. What is Statistics?
22. What are the kinds of Statistics?
23. What do you mean by Inferential Statistics?
24. What are the kinds of data?
25. Define Correlation.
26. Define Regression.
27. What is Econometrics?
Part-C
Answer the following questions in one paragraph:
28. What are the functions of Statistics?
29. Find the Standard Deviation of the following data:
14, 22, 9, 15, 20, 17, 12, 11 (Answer: = 4.18)
30. State and explain the different kinds of Correlation.
31. Mention the uses of Regression Analysis.
32. Specify the objectives of econometrics
33. Differentiate the economic model with econometric model.
34. Discuss the important statistical organizations (offices) in India.
Part-D
Answer the following questions
35. Elucidatethe nature and scope of Statistics.
36. Calculate the Karl Pearson Correlation Co-efficient for the following data
37.Find the regression equation Y on X and X on Y for the following data:
(Answer: Y = 0.787X + 7.26, and X =0.87Y + 26.65)
38. Describe the application of Econometrics in Economics.
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