Relationship Between Dependent & Independent Variables
Associaton between dependent & independent variables is known as
- Correlation
- Regression — Correct Answer
- Heritability
- Repeatability
Explanation:
Correct Answer: Regression
Regression measures the association between a dependent variable and an independent variable — specifically, it quantifies the change in the dependent variable per unit change in the independent variable.
Regression vs Correlation
| Feature | Correlation | Regression |
|---|---|---|
| Definition | Degree of association between two variables | Change in dependent variable per unit change in independent variable |
| Variable roles | Both variables equal (no dependent/independent) | One dependent (Y), one independent (X) |
| Coefficient | r (no unit) | b (carries unit) |
| Range | −1 to +1 | −∞ to +∞ |
| Symmetry | rxy = ryx | bxy ≠ byx |
Regression in Genetics
- h²N = regression of breeding value on phenotypic value
- Repeatability = regression of future performance on present performance
- Realized heritability = R/S (regression of genetic response on selection differential)
📚 About this Topic — Animal Genetics & Breeding
This multiple choice question is from Animal Genetics & Breeding, Animal Refresher. It has 4 options with a detailed explanation of the correct answer. Practice more MCQs from Animal Genetics & Breeding to strengthen your preparation.
