1 / 13

5-Factor Experiment

5-Factor Experiment. Flavor Scores for Potatoes A. Mackey and J. Stockman (1958). “Cooking Quality of Oregon-Grown Russet Potatoes,” American Potato Journal , Vol.35, pp.395-407. Data Description. Response: Flavor Score (Mean of 5 judges/4 reps) Factors:

mgailey
Download Presentation

5-Factor Experiment

An Image/Link below is provided (as is) to download presentation Download Policy: Content on the Website is provided to you AS IS for your information and personal use and may not be sold / licensed / shared on other websites without getting consent from its author. Content is provided to you AS IS for your information and personal use only. Download presentation by click this link. While downloading, if for some reason you are not able to download a presentation, the publisher may have deleted the file from their server. During download, if you can't get a presentation, the file might be deleted by the publisher.

E N D

Presentation Transcript


  1. 5-Factor Experiment Flavor Scores for Potatoes A. Mackey and J. Stockman (1958). “Cooking Quality of Oregon-Grown Russet Potatoes,” American Potato Journal, Vol.35, pp.395-407

  2. Data Description • Response: Flavor Score (Mean of 5 judges/4 reps) • Factors: • Grow Area (1=Southern OR, 2=Central OR) • 2-Week Holding Temp (1=75F, 2=40F) • Potato Size (1=Large, 2=Medium) • Storage Period (1=0months, 2=2m, 3=4m, 4=6m) • Cook Method (1=Boil,2=Steam,3=Mash,4=Bake350,5=Bake450) N=2x2x2x4x5=160 sample measurements

  3. Factor Level (Marginal) Means (Overall=2.91125)

  4. 2-Factor Interaction: Grow area x Storage Period

  5. Statistical Model (Fixed Effects)

  6. Formulas for Sums of Squares

  7. Analysis of Variance (Main Effects)

  8. Analysis of Variance (2-Factor Interactions)

  9. Analysis Of Variance (3-Factor Interactions)

  10. Interpretations • Two 3-Factor Interactions are Significant • Grow Area/Size/Storage Period • Grow Area/Storage Period/Cooking Method • Four 2-Factor Interactions are Significant • Note though that with 3-Factor Interactions being significant, many of 2-Factor Interactions differ among levels of 3rd Factor • Four Main Effects are Significant • Similar Caveats as for 2-Factor Interactions

  11. Grow Area/Size/Storage Period Interaction Southern OR Central OR Small Large Small Large

  12. Grow Area/Storage Period/Cooking Method Interaction Southern OR Central OR 0m 2m 4m 6m 0m 2m 4m 6m

More Related