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Class 11 Economics MCQ Chapter 20 Correlation
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Correlation
Chapter: 20
| PART – B : STATISTICS FOR ECONOMICS |
Choose the Correct Option:
1. What is the statistical analysis involving only one variable called?
(i) Univariate analysis.
(ii) Bivariate analysis.
(iii) Both options (i) and (ii).
(iv) None of the above.
Ans: (i) Univariate analysis.
2. Correlation exists between two variables when:
(i) A change in one variable is accompanied by a change in the other.
(ii) Both variables remain constant.
(iii) Both options (i) and (ii).
(iv) None of the above.
Ans: (i) A change in one variable is accompanied by a change in the other.
3. The relationship between income and expenditure is an example of:
(i) Univariate analysis.
(ii) Bivariate analysis.
(iii) Probability analysis.
(iv) Dispersion analysis.
Ans: (ii) Bivariate analysis.
4. What does correlation measure?
(i) Relationship between two variables.
(ii) Relationship between one variable.
(iii) Both (i) and (ii).
(iv) None of the above.
Ans: (i) Relationship between two variables.
5. What is required to measure correlation effectively?
(i) One pair of values.
(ii) Two or three pairs of values.
(iii) Sufficient number of items.
(iv) Only one variable.
Ans: (iii) Sufficient number of items.
6. Who defined correlation as “a statistical measure of the strength of the relationship between the relative movements of two variables”?
(i) L.R. Connor.
(ii) Croxton and Cowden.
(iii) Karl Pearson.
(iv) None of the above.
Ans: (ii) Croxton and Cowden.
7. In correlation analysis, a bivariate distribution consists of:
(i) Single variable data.
(ii) A set of pairs of observations.
(iii) Only dependent variables.
(iv) No variables at all.
Ans: (ii) A set of pairs of observations.
8. What does correlation signify?
(i) Direction of relationship.
(ii) Causal relationship.
(iii) Both (i) and (ii).
(iv) None of the above.
Ans: (iii) Both (i) and (ii).
9. Which statistical tool is used to measure and express relationships in a formula?
(i) Mean.
(ii) Correlation coefficient.
(iii) Median.
(iv) Mode.
Ans: (ii) Correlation coefficient.
10. What does the term “causation effect” refer to in correlation?
(i) A cause-and-effect relationship between variables.
(ii) No relationship between variables.
(iii) A relationship due to a third variable.
(iv) Random association.
Ans: (i) A cause-and-effect relationship between variables.
11. What is an example of a third variable affecting correlation?
(i) Price and demand of a good.
(ii) Yield of rice and wheat affected by rainfall.
(iii) Temperature and sales of ice cream.
(iv) None of the above.
Ans: (ii) Yield of rice and wheat affected by rainfall.
12. Which of the following best describes mutual effect in correlation?
(i) One variable directly influences another.
(ii) Two variables are unrelated.
(iii) Both variables affect each other.
(iv) Correlation due to coincidence.
Ans: (iii) Both variables affect each other.
13. When does correlation occur due to chance?
(i) When two variables are related by a third variable.
(ii) When there is a direct causal relationship.
(iii) When two variables are randomly related.
(iv) When two variables influence each other.
Ans: (iii) When two variables are randomly related.
14. What distinguishes correlation from association?
(i) Correlation is a measure of association.
(ii) Association and correlation are identical.
(iii) Correlation is more general than association.
(iv) None of the above.
Ans: (i) Correlation is a measure of association.
15. Which of the following is an example of correlation without causation?
(i) Increase in price, reducing demand.
(ii) Rainfall affecting both rice and wheat yield.
(iii) Both options (i) and (ii).
(iv) None of the above.
Ans: (ii) Rainfall affecting both rice and wheat yield.
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