A measure of the extent to which the different types in a population are unequally common. A value of 0 is attained if there is only one type in the population. One index is the Shannon index:
where there are k types and pj is the proportion of type j. The base of the logarithm is arbitrary, but the usual choice is 2 (so that log2 (½)=−1, log2 (¼)=−2, etc.) in which case the index may alternatively be referred to as the entropy of the classifying variable. An alternative is the Simpson index:
- replacement cost
- replacement investment
- replacement rate
- replacement ratio
- replacing bone
- replay attack
- replicable
- replicated data server
- replicate; replication
- replication
- replication manager
- replication transparency
- replicon
- repo
- repolarization
- reporter gene
- report generator
- repository
- Reppe process
- Reppe processes
- representation
- representational
- representationalism
- representation(of a vector)
- representation, political