which is most likely the correlation coefficient for the set of data shown? -0.83 -0.21 0.21 0.83
which is most likely the correlation coefficient for the set of data shown? -0.83 -0.21 0.21 0.83
Answer
Explanation:
Step1: Determine the direction of correlation
The line of best - fit has a negative slope, so the correlation is negative. This eliminates 0.21 and 0.83.
Step2: Assess the strength of correlation
The points are somewhat scattered around the line of best - fit, but they still follow the general trend. A correlation coefficient of - 0.21 indicates a very weak negative correlation, while a correlation coefficient of - 0.83 indicates a relatively strong negative correlation. The data points seem to follow the line well enough to suggest a relatively strong negative correlation.
Answer:
-0.83