MANE 6313 - Design of Experiments

Homework Assignment 11

Assigned: April 13, 2026

Due: April 24, 2026

Use the data found in Table P11.3 for problem 11.8 (Box-Behnken design) to answer the following questions. Do not answer the questions in the textbook; instead answer the following questions.

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