Lily Is Interested in Constructing an Index to Measure Political

Multiple Choice

Lily is interested in constructing an index to measure political conservatism in Ohio.She has identified 10 different items to include in her index.Before she can claim that her index is valid,she must

A) define her items.
B) conduct an item analysis.
C) externally validate her index.
D) define her items and conduct an item analysis.
E) conduct an item analysis and externally validate her index.