Q. 6 - Elementary Statistics

Question

6. What kind of plot is useful for deciding whether finding a regression line for a set of data points is reasonable?

Step-by-Step Solution

Answer

The scatter plot is useful for deciding whether finding a regression line for a set of data points.

Step 1: Concept Introduction

To calculate a regression line's slope, divide the standard deviation of the $x$ values by the standard deviation of the $y$ values, and multiply this value by the correlation between $x$ and $y$.  

Step 2: Explanation

The plot can be used to determine whether a regression line for a series should be found.

Data points represent the horizontal and vertical axes in a scatter plot.

The variables will be compared to one another.

As a result, the scatter plot might help you decide whether or not to look for a regression line for a set of data.