Group Comparison Tools - Adjusting Changes vs. Levels
Posted: Tue Mar 29, 2016 9:17 am
Hello,
I am using the Group Comparison Tools when overriding series in my models. I am confused by how EViews seems to adjust the levels under certain circumstances, and the changes under other circumstances.
I am using EViews 8 Enterprise 64-bit on Windows 7.
Example:
I am starting with series A and B both = 1.
If I make changes to @PCHA(A), the series A level increases in that period and continues at that level going forward.
If I revert the change, switch to making changes to @PCHY(A), and make a change, the series A level only increases in that specific period.
It seems that for @PCHA(A), EViews keeps the change to the level applied through the rest of time, whereas changing @PCHY(A) only alters one time period's level.
Can you please explain why the changes seem to have different impacts? Is there a way to choose the impact? For instance, if I want to change the @PCHY(A) to 1%, but keep the adjusted level of A for the rest of time.
Thank you,
Mike
I am using the Group Comparison Tools when overriding series in my models. I am confused by how EViews seems to adjust the levels under certain circumstances, and the changes under other circumstances.
I am using EViews 8 Enterprise 64-bit on Windows 7.
Example:
I am starting with series A and B both = 1.
- Starting point
- group1.PNG (26.59 KiB) Viewed 1982 times
- @PCHA change
- pcha.PNG (31.74 KiB) Viewed 1982 times
- @PCHY change
- pchy.PNG (27.34 KiB) Viewed 1982 times
Can you please explain why the changes seem to have different impacts? Is there a way to choose the impact? For instance, if I want to change the @PCHY(A) to 1%, but keep the adjusted level of A for the rest of time.
Thank you,
Mike