Which one of the following is not a parameter of the HoltWinters() function?

1.Which one of the following functions estimates the autocorrelation for time series object?

 

(a) acf() (b) diff()

(c) arima() (d) pacf()

2. Which one of the following functions estimates the partial autocorrelation for time series

object?

(a) acf() (b) diff()

(c) arima() (d) pacf()

3. Which one of the following functions automatically returns a candidate ARIMA model?

(a) HoltWinters() (b) auto.arima()

(c) arima() (d) arima.sim()

4. Which one of the following functions finds out the parameters of a candidate ARIMA

model?

(a) HoltWinters() (b) auto.arima()

(c) arima() (d) arima.sim()

5. Which one of the following function simulates an ARIMA model?

(a) HoltWinters() (b) auto.arima()

(c) arima() (d) arima.sim()

6. Which one of the following functions forecasts an ARIMA model?

(a) arima() (b) auto.arima()

(c) forecast.Arima() (d) arima.sim()

7. Which one of the following function creates a diagnostic plot for an ARIMA model?

(a) arima() (b) auto.arima()

(c) tsdiag() (d) ts()

8. Which one of the following is not a parameter of an ARIMA model?

(a) Moving average (b) Difference

(c) Auto regression (d) Lag

9. How many plots are generated by the tsdiag() function?

(a) 2 (b) 3

(c) 4 (d) 5

10. Which one of the following is not a parameter of the HoltWinters() function?

(a) Alpha (b) Gamma

(c) Beta (d) Lambda

 

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