Question: A scatter plot shows the relationship between the number of tutoring sessions and final math scores for 20 students. The trend line suggests a positive linear relationship. However, one student with 0 sessions scored the highest in the class. The school wants to predict whether increasing tutoring improves scores. What should they do before concluding tutoring causes score improvement?
A) Use the existing trend line for predictions because most data follows the pattern
B) Change the trend line to pass through the highest score
C) Remove the high-scoring student as an outlier and re-evaluate the strength of the relationship
D) Replace the student’s data with the average score to improve balance
Correct answer: C
Grade: 8 | Topic: Statistics and Probability | Difficulty: Hard | Standard: 8. SP. A. 2