I wonder that will log transformation always mitigates the heteroskedasticity? Because the textbook states that log transformation often reduces the heteroskedasticity. So, I want to know that in which cases, it won't lessen heteroskedasticity.

Thanks for your reply!

Will log transformation always mitigate heteroskedasticity? Because the textbook states that log transformation often reduces the heteroskedasticity. So, I want to know in which cases it won't lessen heteroskedasticity.