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Anova case study

The situation

text-based menu display for very large telephone directory

names are presented as a range within a selectable menu item

users navigate until unique names are reached

but several ways are possible to display these ranges

Question

what display method is best?

1) Arbor- Kalmer

2) Kalmerson- Ulston

3) Unger- Zlotsky

1) Arbor- Farquar

2) Farston- Hoover

3) Hover- Kalmer

1) Horace    - Horton

2) Hoover, James

3) Howard, Rex

...

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