The value of regression coefficient 'Z' is dependent on

Options

A. Species of taxonomic group
B. Area or region
C. Both (1) and (2)
D. None of the above

Answer

To solve the question regarding the value of the regression coefficient 'Z' and its dependence, we can follow these steps:

### Step-by-Step Solution:

1. **Understand the Concept of Regression Coefficient 'Z':**
- The regression coefficient 'Z' is a measure used in the species-area relationship, which describes how the number of species (biodiversity) changes with the area available.

2. **Identify the Range of 'Z':**
- The value of 'Z' typically lies within a specific range, which is generally between 0.1 to 0.2. This indicates that 'Z' is a consistent value across different studies.

3. **Consider the Factors Influencing 'Z':**
- The question asks what 'Z' is dependent on. The options provided are:
- Species of the taxonomic group
- Area or region
- Both first and second
- None of the above

4. **Evaluate the Options:**
- The value of 'Z' does not significantly change based on the species of the taxonomic group or the area/region. It remains relatively constant across different contexts.

5. **Conclusion:**
- Since 'Z' is not dependent on the taxonomic group or the area/region, the correct answer is "none of the above."

### Final Answer:
The value of regression coefficient 'Z' is dependent on **none of the above**.

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