Question

question 8
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what does a correlation coefficient of -0.85 indicate?
o a. perfect positive correlation
o b. no correlation
o c. strong negative correlation
o d. weak negative correlation
o e. none of these

Explanation:

The correlation coefficient \(r\) measures the strength and direction of a linear relationship between two variables. The value of \(r\) ranges from \(- 1\) to \(1\). A negative \(r\) value indicates a negative correlation (as one variable increases, the other decreases). The closer \(r\) is to \(-1\) or \(1\), the stronger the correlation. Since \(-0.85\) is close to \(-1\) and negative, it indicates a strong negative correlation.

Answer:

C. Strong negative correlation