Which statement is true about using scatter plots to make predictions?

Question

You cannot make predictions by visually using the trend line.



Any two points can be used to draw a trend line.



All you need is the slope of the trend line.



You can use the equation of a trend line to find the y-value of a given x-value.

Answer 1

The statement that is true about using scatter plots to make predictions is:

You can use the equation of a trend line to find the y-value of a given x-value.

This statement is correct because once a trend line (usually a linear regression line) is established on a scatter plot, you can use the equation of that line to predict the expected y-value for any given x-value within the range of the data.