Answer:
1. quadratic
2. quadratic
3. linear
4. quadratic
Explanation:
In the picture attached, the scatter plots are shown.
The differences between these correlations are:
- linear : makes a straight line
- quadratic: makes a ∩ or ∪
- exponential: rises or falls quickly in one direction
In plot 1, 2 and 4, we can see that y-values decrease at first and then they increase. This is a feature of quadratic correlation
In plot 3, we can see that y-values increase uniformly as x-values increase.This is a feature of linear correlation