Example of an individual value plot with groupsmain topic interpreting results session commands see also
Example of an individual value plot with groupsYour company manufactures billiard balls, and you want to determine if either of two additives improves the elasticity of your plastic. You prepare samples with Additive 1, Additive 2, and no additive, and measure the elasticity on a 0 to 100 scale. Create an individual value plot to compare the elasticity of the samples.
1 Open the worksheet BILLIARD.MTW.
2 Choose Graph > Individual Value Plot.
3 Under One Y, choose With Groups. Click OK.
4 In Graph variables, enter Elastic.
5 In Categorical variables for grouping (1-4, outermost first), enter Additive. Click OK in each dialog box.
Graph window output
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Tip |
To see the value and row number for an individual symbol, hover your cursor over the symbol. |
Additive 1 appears to increase elasticity. Elasticity values for plastic with Additive 1 range from 65 to 89, while values for plastic with no additive (Additive 0) range from 41 to 66. Additive 2 may actually decrease elasticity, as values for plastic with this additive range from 34 to 54. The variation within each group appears to be about the same.