Question

The ________ is a straight line that summarizes a linear relationship by passing through the center of the scores on a scatterplot. curvilinear line non-linear line linear regression line correlation coefficient

Answer 1

Solution:

The linear regression line is a straight line that summarizes a linear relationship by passing through the center of the scores on a scatterplot.

Since curvilinear line gives curve which does not give linear relationship.

non-linear line also does not give  linear relationship between two variables.

correlation coefficient is just a numeric value that describe the strength of linear relationship, which is not a line.

linear regression line only  summarizes a linear relationship by passing through the center of the scores on a scatterplot.