Scatter Diagram MCQs
Scatter Diagram – MCQs with Answers & Explanations
Class: 11th |
Subject: Economics (Statistics for Economics) |
Section: Correlation |
Topic: Scatter Diagram
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 an easy and concept‑clearing explanation.
1. A scatter diagram is used to study:
Answer: C
Scatter diagram graphically shows the relationship between two variables and helps identify correlation visually.
Scatter diagram graphically shows the relationship between two variables and helps identify correlation visually.
2. In a scatter diagram, each dot represents:
Answer: B
Each point shows a pair of values (X,Y) representing two related variables.
Each point shows a pair of values (X,Y) representing two related variables.
3. If dots slope upward, correlation is:
Answer: B
Upward trend indicates both variables increase together → positive correlation.
Upward trend indicates both variables increase together → positive correlation.
4. Downward sloping dots indicate:
Answer: B
When one variable rises and the other falls, the pattern slopes downward.
When one variable rises and the other falls, the pattern slopes downward.
5. Randomly scattered dots show:
Answer: C
No visible pattern means variables are unrelated.
No visible pattern means variables are unrelated.
6. Perfect positive correlation occurs when dots lie:
Answer: A
All points fall exactly on a straight rising line.
All points fall exactly on a straight rising line.
7. Perfect negative correlation means:
Answer: B
All dots lie exactly on a straight downward line.
All dots lie exactly on a straight downward line.
8. Scatter diagram was developed by:
Answer: B
Francis Galton introduced scatter diagram for correlation study.
Francis Galton introduced scatter diagram for correlation study.
9. Scatter diagram is a:
Answer: B
It visually represents correlation through plotted points.
It visually represents correlation through plotted points.
10. Closer dots indicate:
Answer: B
Less scatter → stronger relationship.
Less scatter → stronger relationship.
11. Widely scattered dots show:
Answer: B
Greater dispersion → weaker relationship.
Greater dispersion → weaker relationship.
12. Scatter diagram helps in:
Answer: B
It gives visual/approximate understanding, not numerical value.
It gives visual/approximate understanding, not numerical value.
13. Non‑linear pattern shows:
Answer: B
Dots forming curves indicate non‑linear relationship.
Dots forming curves indicate non‑linear relationship.
14. Scatter diagram requires:
Answer: B
Correlation always studies two related variables.
Correlation always studies two related variables.
15. Example suitable for scatter diagram:
Answer: A
Both variables are measurable and related.
Both variables are measurable and related.
16. If dots form horizontal line:
Answer: C
No change in Y despite change in X → zero correlation.
No change in Y despite change in X → zero correlation.
17. Vertical line pattern shows:
Answer: C
X constant, no relation → zero correlation.
X constant, no relation → zero correlation.
18. Main advantage:
Answer: B
Easy to draw and interpret.
Easy to draw and interpret.
19. Limitation:
Answer: A
It does not provide numerical coefficient.
It does not provide numerical coefficient.
20. Scatter diagram is also called:
Answer: A
Because data pairs are shown as dots.
Because data pairs are shown as dots.