Same chapter3 marksDifficulty: Medium
Distinguish between positive and negative correlation, giving one example of each.
Correlation Analysis
3 marksDifficulty: Medium
What does a scatter diagram show, and what pattern indicates perfect positive correlation?
Original Khojo Papers practice question — not from a past board paper.
Answer
A scatter diagram plots the paired observations as points and shows at a glance the direction and the closeness of the relation between the two variables. Perfect positive correlation appears as points lying exactly on a straight line rising from left to right.
No citable source has been recorded for this record. Treat it as practice material, not as fact.
Explanation
Points scattered with no pattern indicate no correlation.
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