Cuestionario vinculado a una guía · Medio Nivel
Cuestionario sobre modelos de volatilidad de GARCH
Comprenda cómo los shocks y la varianza pasados impulsan los pronósticos de GARCH y distinga la volatilidad condicional de la dirección del rendimiento y el riesgo realizado.
Pregunta 1 de 8
¿Qué términos impulsan la siguiente varianza en un modelo GARCH(1,1)?
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Las respuestas y explicaciones aparecen a medida que realiza el cuestionario.
- ¿Qué términos impulsan la siguiente varianza en un modelo GARCH(1,1)?
- A constant, past squared innovation and past conditional variance
- Only the current return sign
- The next observed return and its future error
- The number of features and clusters
- ¿Qué tiende a afectar a la varianza condicional un gran shock cuadrado reciente?
- Set the expected return direction to positive
- Raise the next variance forecast through the ARCH term
- Force beta to zero
- Make realized variance known exactly
- ¿Puede un pronóstico de varianza GARCH determinar si el próximo rendimiento es positivo o negativo?
- Yes, beta is the return sign
- Yes, higher variance means a positive return
- No, it models conditional variance rather than return direction
- Only if the variance forecast is zero
- ¿Qué ayudan a evaluar los residuos estandarizados?
- The exact future loss amount
- Whether feature names are ordered
- The number of seasonal periods
- Whether innovations scaled by fitted volatility retain structure
- ¿Por qué inspeccionar residuos estandarizados al cuadrado?
- To estimate the mean return direction
- To look for remaining volatility clustering
- To calculate a classification threshold
- To test whether all shocks are positive
- Under standard GARCH(1,1) assumptions, what does alpha+beta near one suggest?
- A known positive return
- No effect of past variance
- Highly persistent volatility shocks
- A zero conditional variance
- Why might a heavy-tailed innovation distribution be considered?
- It makes the mean equation unnecessary
- It guarantees every tail event is predicted
- It sets conditional variance to zero
- Financial returns may produce more extreme observations than a normal model captures
- Which measurement caveat applies when validating a variance forecast against realized variance?
- The proxy itself is noisy and imperfectly measured
- A proxy is always the true conditional variance
- Only the return mean can be evaluated
- The forecast horizon no longer matters