Karl Pearson’s Coefficient MCQs
Karl Pearson’s Coefficient – MCQs with Answers & Explanations
Class: 11th |
Subject: Economics (Statistics for Economics) |
Section: Correlation |
Topic: Karl Pearson’s Coefficient
Board: CBSE Board Examinations
Board: CBSE Board Examinations
These Multiple Choice Questions (MCQs) are designed strictly as per the NCERT syllabus, making them ideal for CBSE Class 11 Board Examination preparation. Each question includes easy and concept‑clearing explanations.
1. Karl Pearson’s coefficient measures:
Answer: B
It measures the degree and direction of linear relationship between two variables.
It measures the degree and direction of linear relationship between two variables.
2. Symbol of Karl Pearson’s coefficient:
Answer: B
The coefficient of correlation is denoted by ‘r’.
The coefficient of correlation is denoted by ‘r’.
3. Range of r is:
Answer: B
The value always lies between –1 and +1.
The value always lies between –1 and +1.
4. r = +1 indicates:
Answer: B
Both variables move exactly in the same direction.
Both variables move exactly in the same direction.
5. r = –1 indicates:
Answer: A
Variables move exactly in opposite direction.
Variables move exactly in opposite direction.
6. r = 0 means:
Answer: B
No linear relationship exists.
No linear relationship exists.
7. Formula of Karl Pearson coefficient is:
Answer: B
It is covariance divided by product of standard deviations.
It is covariance divided by product of standard deviations.
8. Karl Pearson method measures:
Answer: A
It measures linear relationship only.
It measures linear relationship only.
9. If r is close to +1:
Answer: B
Closer to +1 → stronger positive relationship.
Closer to +1 → stronger positive relationship.
10. If r is close to –1:
Answer: A
Closer to –1 → strong inverse relationship.
Closer to –1 → strong inverse relationship.
11. Karl Pearson coefficient is also called:
Answer: A
Because it uses product of deviations.
Because it uses product of deviations.
12. Required data type:
Answer: B
Karl Pearson requires numerical data.
Karl Pearson requires numerical data.
13. Independent variables give r:
Answer: C
No relationship → zero correlation.
No relationship → zero correlation.
14. Sign of r shows:
Answer: B
+ or – sign indicates direction of relationship.
+ or – sign indicates direction of relationship.
15. Magnitude of r shows:
Answer: B
Absolute value shows strength.
Absolute value shows strength.
16. r = 0.9 indicates:
Answer: B
Very high positive relationship.
Very high positive relationship.
17. r = –0.2 indicates:
Answer: B
Low inverse relationship.
Low inverse relationship.
18. If all points lie on straight line:
Answer: B
Indicates perfect correlation.
Indicates perfect correlation.
19. Main limitation:
Answer: B
Outliers influence coefficient.
Outliers influence coefficient.
20. Karl Pearson coefficient is most widely used because:
Answer: B
It gives exact quantitative measure of correlation.
It gives exact quantitative measure of correlation.