Answer :
Final answer:
A scatter diagram can be used to visually analyze the relationship between two variables and determine the type of regression model to use.
Explanation:
A scatter diagram, also known as a scatter plot, is a graph that shows the relationship between two variables. It is commonly used to identify the type of regression to use.
By examining the scatter diagram, we can determine if there is a linear relationship between the variables, which would suggest the use of linear regression. If the points on the scatter diagram form a curved or non-linear pattern, then a non-linear regression model may be more appropriate.
For example, if the scatter diagram shows a roughly straight line going through the points, it indicates a linear relationship between the variables and linear regression would be suitable.
On the other hand, if the scatter diagram shows a curved pattern or points that cluster around a specific curve, it suggests a non-linear relationship and a non-linear regression model should be considered.
In summary, a scatter diagram can be used to visually analyze the relationship between two variables and determine the type of regression model to use, whether it is linear or non-linear.
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