Question 25
Which of the following statements are true with respect to ACF and PACF plots
I. ACF plots are used to determining the order of Autoregressive models.
II. PACF plots are used to determining the order of Autoregressive models.
III. PACF plots just computes the Pearson’s correlation between the variable and it’s lagged versions.
IV. ACF plots just computes the Pearson’s correlation between the variable and it’s lagged versions.
I and III
II and IV
I and IV
II and III