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(b) Unpublished sources.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unpublished sources.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 

Answer: r=0.9955)

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.