QUESTION 1The ACF for a data series is high until lag 3 then starts declining smoothly after lag 3The PACF for that data series is high until lag 4 then starts declining smoothly after lag 4What models would be a reasonable starting point based on these patterns?O An AR model with up to 4 AR terms, no MA componentO an ARMA model with up to 4 AR terms and up to 3 MA termsO An MA model with up to 3 MA terms, no AR componentO An ARMA model with up to 3 AR terms and up to 4 MA termsQUESTION 2Assume that we are comparing three different models: model 1, model 2, and model 3• The AIC for model 1 is -10, the BIC is -11• The AIC for model 2 is -8, the BIC is -12• The AIC for model 3 is -7, the BIC is -9Which of the following statements is trueO Model 3 fits the data much better than model 1 and model 2. We always want the AIC and the BIC to be highO AIC prefers model 1, BIC prefers model 2, both models should be kept as potential alternatives depending on the researcher's preferencesAIC prefers model 2, BIC prefers model 1, both models should be kept as potential alternatives depending on the researcher's preferencesO AIC prefers model 1, BIC prefers model 2, we should only use model 1 because the AIC is the only way to select a model

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QUESTION 1 The ACF for a data series is high until lag 3 then starts declining smoothly after lag 3 The PACF for that data series is high until lag 4 then starts declining smoothly after lag 4 What models would be a reasonable starting point based on these patterns? An AR model with up to 4 AR terms, no MA component an ARMA model with up to 4 AR terms and up to 3 MA terms O An MA model with up to 3 MA terms, no AR component O An ARMA model with up to 3 AR terms and up to 4 MA terms

QUESTION 1 The ACF for a data series is high until lag 3 then starts declining smoothly after lag 3 The PACF for that data series is high until lag 4 then starts declining smoothly after lag 4 What models would be a reasonable starting point based on these patterns? An AR model with up to 4 AR terms, no MA component an ARMA model with up to 4 AR terms and up to 3 MA terms O An MA model with up to 3 MA terms, no AR component O An ARMA model with up to 3 AR terms and up to 4 MA terms

Algebra & Trigonometry with Analytic Geometry

13th Edition

ISBN:9781133382119

Author:Swokowski

Publisher:Swokowski

Chapter5: Inverse, Exponential, And Logarithmic Functions

Section5.6: Exponential And Logarithmic Equations

Problem 64E

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