Math Problem Statement

If the r-value, or correlation coefficient, of a data set is 0.908, what is the coefficient of determination to three decimal places?

Solution

The question asks to find the coefficient of determination given the correlation coefficient (r-value) of 0.908.

The coefficient of determination, R2R^2, is calculated as the square of the correlation coefficient:

R2=r2R^2 = r^2

Given that r=0.908r = 0.908, we can compute:

R2=(0.908)2R^2 = (0.908)^2

Let's calculate that.The coefficient of determination R2R^2, rounded to three decimal places, is 0.824.

The correct answer is B. 0.824.

Would you like further details or have any questions?

Here are some related questions you might find helpful:

  1. How is the correlation coefficient different from the coefficient of determination?
  2. What does a coefficient of determination of 0.824 tell us about the data set?
  3. How do we interpret a correlation coefficient of 0.908 in practical terms?
  4. Can the coefficient of determination ever be negative?
  5. What is the relationship between rr and R2R^2 when rr is exactly 1 or -1?

Tip: The closer the coefficient of determination R2R^2 is to 1, the better the model explains the variability of the response data.

Ask a new question for Free

By Image

Drop file here or Click Here to upload

Math Problem Analysis

Mathematical Concepts

Statistics
Correlation Coefficient
Coefficient of Determination

Formulas

R² = r²

Theorems

Coefficient of Determination Theorem

Suitable Grade Level

Grades 9-12