Mathematics for IGCSE & O level - Statistical Diagrams (Section 3 - No. 48)
If a scatter diagram shows a positive correlation, what can you infer about the relationship between the variables?
As one variable increases, the other decreases.
The variables have no relationship.
As one variable increases, the other also tends to increase.
The variables remain constant.
Giải thích
A positive correlation indicates that the variables tend to change in the same direction.