Identify Sources of Variation

  1. Present

In the measurement phase, you produced 5 planes and took 5 measurements of each one per each variable.

Create:

  1. One histogram for all 25 data points for distance and one histogram for all 25 data points for deviation (2 points possible). What is your conclusion?
  2. One Pareto chart for all data points for distance and one Pareto chart for all data points for deviation (2 points possible). What is your conclusion?
  3. Boxplots for all data points for distance (I want to see five boxplots on the same graph, one per each plane), and boxplots for all data points for deviation. (2 points possible). What is your conclusion?
  4. Scatter plots for all data points. We are looking for a relationship between distance and deviation (2 points possible). What is your conclusion?
  5. One XBar R chart for all data points for distance and one XBar R chart for all data points for deviation. Subgroup size 5.   What is your conclusion (2 points possible)?
  6. Find mean, median and standard deviation per each variable (one for distance and one for deviation) for all 25 points (2 points possible)?
  7. Identify Sources of Variation
    1. Human force (do we need to repeat measurements by another person?) (3 points possible)
    2. Airplane design itself (3 points possible)
    3. Anything else???
  8. List the Possible Root Causes (4 points possible)
  9. What are the Improvement Opportunities? (List them) (3 points possible)