Correlation between Numerical Variables - TEsting the null hypothesis of zero correlation

3 important questions on Correlation between Numerical Variables - TEsting the null hypothesis of zero correlation

Why is using the SEr as the 95%CI not ideal?

Because the sampling distribution of r is not normal.

What does the Fisher's z-transformation calculate?

The approximate confidence interval for r.

What is the H0 and HA for zero correlation?

H0:  ρ = 0
HA: ρ =/ 0

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