Example of an individual value plot of one Y variable with groups


As part of the initial investigation, the engineer creates an individual value plot to compare the elasticity of the samples.

  1. Open the sample data, BilliardBallElasticity.MTW.
  2. Choose Graph > Individual Value Plot > One Y > With Groups.
  3. In Graph variables, enter Elastic.
  4. In Categorical variables for grouping (1-4, outermost first), enter Additive.
  5. Click OK.

Interpret the results

Additive 1 appears to increase elasticity. Additive 2 may actually decrease elasticity. For samples that have no additive (0), the elasticity appears to be between additives 1 and 2. The variation within each group appears to be about the same.
