EViews.com

hi guys,

I am new to eviews , i am having some trouble with declaring and manipulating time series variables. I have a time series data and i want to use this formula to create a new variable.

stock= stock(t)-stock(t-1)

My data is quarterly so i just used the formula stock= stock(1)-stock(-1) thinking it might work. What eviews did was subtract the third quarter with my first quarter instead of the second with first! Is my formula wrong? if so please help!

What does: mean?

basically i have a data like this

q1 4
q2 5
q3 2
q4 3

and i want to create a new variable which basically subtracts current period by previous period. For this sample i would get three observations.

1) q2-q1 1
2) q3-q2 -3
3) q4-q3 1

In order to do this i need to enter a formula to help me , i want help with that!

Thanks!

sat

q -q(-1)

We can only help if you tell us what it is you're trying to do.

when i use q-q(-1) ........what does the -1 stand for?......

when i use q-q(-1) ..what does the -1 stand for?

One period lag.