Which statement(s) are correct about the Factorial Plot shown here? (Note: There are 3 correct answers).

Question

Quizplus · Accepted Answer

A) This can be observed from the upward trend of the lines connecting the low, medium, and high levels of cutting speed and the corresponding tool age values.
B) This can be observed from the fact that the line connecting the high level of metal hardness and the corresponding tool age value has a steeper slope than the line connecting the low level of metal hardness and the corresponding tool age value.
C) By looking at the coded coefficients for cutting speed and cutting angle in the equation for tool age, it can be observed that the coefficient for cutting speed is smaller in magnitude than the coefficient for cutting angle, indicating that cutting speed has a smaller effect on tool age compared to cutting angle.
D) This information cannot be determined from the plot alone.
E) These plots are not necessarily interaction plots, as they only show the main effects of each factor on the response variable.

Which Statement(s) Are Correct About the Factorial Plot Shown Here