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QuizMultiple Choice

Calculating the Least-Squares Regression Line

Question 1 • CR_(AQR)_Advanced Quantitative Reasoning A_2111_SAISD 25-26

In the decathlon event at large track meets, male athletes compete in a total of 10 events. Their combined performance in each of the events is used to determine the winner. Two of the events are the 200-meter dash and the javelin throw. For 12 athletes at a large international competition, performances in these events are recorded and placed in a scatterplot. The performance for one athlete from Latvia is labeled in the graph.

Question illustration
Answer
A
This data point weakens the correlation.
B
This data point strengthens the correlation.
C
This data point has no influence on the correlation.
D
Removing this data point would lower the correlation coefficient.
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