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Hey guys I'm trying to answer a question 'according to folklores, negative returns tend to cause more volatility than positive ones. Does this hold for the DJCA return series?'

I'm unsure how I can show if this is true or not, any help would be greatly appreciated thanks

Hey guys I'm somewhat new to econometrics so this might be a rookie question but if a question asks this: 'Can you build an adequate model for the DJCA return series, which captures the dependence structure in the return series?' Would I be right in looking at Ac in returns and squared returns, if i...