Define Numerical Taxonomy

Explanation

### Step-by-Step Solution

1. **Definition of Numerical Taxonomy**: Numerical taxonomy is a branch of taxonomy that evaluates organisms based on their similarities and differences using mathematical methods.

2. **Basis of Evaluation**: It focuses on the numerical evaluation of organisms, which means it quantifies the characteristics of different organisms to assess how similar or different they are from one another.

3. **Ordering of Organisms**: After evaluating the similarities, numerical taxonomy organizes these organisms into groups or taxa based on their similarities, creating a hierarchical structure.

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