which is most likely the correlation coefficient for the set of data shown? -0.91 -0.35 0.35 0.91
which is most likely the correlation coefficient for the set of data shown? -0.91 -0.35 0.35 0.91
Answer
Explanation:
Step1: Determine the direction of correlation
The data points show a downward - sloping trend, so it is a negative correlation. So we can rule out 0.35 and 0.91 which are positive values.
Step2: Assess the strength of correlation
The data points are closely clustered around the line of best - fit. A correlation coefficient of - 0.35 indicates a weak negative correlation, while a correlation coefficient of - 0.91 indicates a strong negative correlation. Since the points are closely grouped, it is a strong negative correlation.
Answer:
-0.91