Changes in the Unconditional Variance and Autoregressive Conditional Heteroscedasticity
This paper argues that a simple white noise process with one jump in its unconditional variance may give rise to the presence of ARCH effects, and, surprisingly, this may occur in determinate circumstances even when the jump is very brief. Though ARCH effects are not denied, this evidence, together...
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| Format: | Article |
| Language: | English |
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EconJournals
2016-10-01
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| Series: | International Journal of Economics and Financial Issues |
| Online Access: | http://mail.econjournals.com/index.php/ijefi/article/view/2643 |