Suppose the coefficient of correlation for two variable is r= -0.811. O 0.811 O -0.811 O 0.658 O Not enough information to determine

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### Understanding Coefficient of Determination

**Problem Statement:**

"Suppose the coefficient of correlation for two variables is r = -0.811. Find the coefficient of determination."

**Answer Choices:**
1. 0.811
2. -0.811
3. 0.658
4. Not enough information to determine
5. None of these

**Explanation:**

To calculate the coefficient of determination (R²), you square the coefficient of correlation (r). The coefficient of determination indicates the proportion of the variance in the dependent variable that is predictable from the independent variable.

Given: \( r = -0.811 \)

Calculation:
\[ R² = r² \]
\[ R² = (-0.811)² \]
\[ R² = 0.658 \]

### Correct Answer:
The coefficient of determination is **0.658**.

This implies that approximately 65.8% of the variance in the dependent variable can be explained by the independent variable.
Transcribed Image Text:### Understanding Coefficient of Determination **Problem Statement:** "Suppose the coefficient of correlation for two variables is r = -0.811. Find the coefficient of determination." **Answer Choices:** 1. 0.811 2. -0.811 3. 0.658 4. Not enough information to determine 5. None of these **Explanation:** To calculate the coefficient of determination (R²), you square the coefficient of correlation (r). The coefficient of determination indicates the proportion of the variance in the dependent variable that is predictable from the independent variable. Given: \( r = -0.811 \) Calculation: \[ R² = r² \] \[ R² = (-0.811)² \] \[ R² = 0.658 \] ### Correct Answer: The coefficient of determination is **0.658**. This implies that approximately 65.8% of the variance in the dependent variable can be explained by the independent variable.
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