ballislifeqw5573 ballislifeqw5573 Today at 3:14 PM Business Answered What does volatility mean? Explain briefly how ARCH models account for volatility. In the following output, is there an ARCH effect? ARCH Test Results: nx R2 30.132, n = 60 û? = 0.237 +0.0643 û²+0.064 û