Mathematics for IGCSE & O level - Statistical Diagrams (Section 4 - No. 29)
Which of the following is a characteristic of a strong positive correlation in a scatter diagram?
The points are scattered randomly.
The points form a clear downward trend.
The points form a clear upward trend and are close to the line of best fit.
The points are clustered horizontally.
Explication
A strong positive correlation is evident when the points cluster closely around an upward-sloping line of best fit.