A scatterplot A)shows how Y and X are related when their relationship is scattered all over the place. B)relates the covariance of X and Y to the correlation coefficient. C)is a plot of n observations on X_i and Y_i, where each observation is represented by the point (X_i, Y_i). D)shows n observations of Y over time.

Question

Quizplus · Accepted Answer

A scatterplot is a plot of n observations on two variables or attributes, typically denoted by X and Y, where each observation is represented by the point (X, Y). Option A is incorrect because a scatterplot can show different types of relationships, not just scattered ones. Option B is incorrect because the covariance and correlation coefficient are related but not the same, and that relationship is not the primary purpose of a scatterplot. Option D is incorrect because a scatterplot shows observations in a two-dimensional space, not over time.

A Scatterplot