APFIVE Determining a Causal Relationship in Data
An analysis of a dataset reveals a positive correlation between students eating breakfast and their test scores. Which of the following methods would be most effective for determining whether a causal relationship exists between these two variables?
A
Increase the sample size of the original correlation study
B
Graph the data using different visualization techniques
C
Conduct a controlled experiment with random assignment
D
Calculate a stronger correlation coefficient
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