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MANE 6313 - Design of Experiments

Homework Assignment 12

Assigned: April 20, 2026

Due: May 1, 2026

Use the data found in Table P11.4 for problem 11.9 to answer the following questions. You are only to analyze the conversion variable \(y_1\). Do not answer the questions in the textbook; instead answer the following questions.

  1. Find the best model to predict conversion,
  2. Perform the residual analysis for the model found in question 1,
  3. Develop contour plots and 3D plots for conversion,
  4. What is the value of the stationary point in terms of the coded and uncoded variables?
  5. What type of stationary point is found? Provide graphs to support your answer.

Please consider the following two homework hints. Note that there was an error in the first hint. Please read both hints carefully.