Identify most appropriate time series process for the data

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Reference no: EM131344267

1. You obtain the following sample autocorrelations and partial autocorrelations for a sample of 100 observations from actual data:

Lag

Acf

pacf

1

0.420

0.632

2

0.104

0.381

3

0.032

0.268

4

-0.206

0.199

5

-0.138

0.205

6

0.042

0.101

7

-0.018

0.096

8

0.074

0.082

(i) Can you identify the most appropriate time series process for the data?

(ii) Use the Ljung-Box Q* test to determine whether the first three autocorrelation coefficients taken together are jointly significant from zero.

Reference no: EM131344267

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