Question

which is the best estimate of the correlation coefficient for the scatter plot? plot d variable y variable x 0.3 1 -0.9

Explanation:

Step1: Analyze scatter - plot trend

The points in the scatter - plot generally show an upward trend, indicating a positive correlation.

Step2: Evaluate strength of correlation

The points are not perfectly aligned in a straight line, so the correlation is not perfect. A correlation coefficient of 1 represents a perfect positive linear correlation. Since the points have some scatter, the correlation coefficient is less than 1 but positive. A value of 0.3 indicates a weak positive correlation, and - 0.9 indicates a strong negative correlation. The scatter - plot shows a moderately positive correlation, closer to 0.3 among the given options.

Answer:

0.3