Question

which of the following best describes a scatterplot in which a quadratic regression curve could be determined? points that tend to follow a strait downward line from left to right. points that tend to follow a strait upward line from left to right. points that show no obvious pattern. points that show a curved pattern or a pattern with a clear “u” shape.

Explanation:

A quadratic regression curve is used when the relationship between variables is non - linear and has a curved shape, like a parabola which can be in the form of a "U" or an inverted "U". Points following a straight line are for linear regression, and points with no pattern cannot be modeled by quadratic regression.

Answer:

Points that show a curved pattern or a pattern with a clear "U" shape.