How do outliers affect the correlation coefficient?
Outliers can skew the results of the correlation coefficient, making the relationship appear stronger or weaker than it actually is.
What is the significance of a zero correlation?
A zero correlation indicates that there is no linear relationship between the variables.
Can a correlation coefficient provide insights into the causal relationship between variables?
No, the correlation coefficient can indicate the strength and direction of a relationship between two variables but it cannot establish causality.
What does a correlation coefficient of +0.8 indicate?
A correlation coefficient of +0.8 suggests a strong positive relationship between the variables, meaning as one variable increases, the other tends to increase as well.
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