Question

algebra 1 unit 2 practice what r - value suggests a strong positive correlation between two variables? -1 -0.8 0.7 0.9

Explanation:

Step1: Recall correlation coefficient range

Correlation values \(r\) lie in \([-1, 1]\).

Step2: Define strong positive correlation

Strong positive correlation means \(r\) is close to \(1\).

Step3: Evaluate given options

Compare values: \(-1\) (strong negative), \(-0.6\) (moderate negative), \(0.7\) (moderate positive), \(0.9\) (strong positive).

Answer:

D. 0.9