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Basic Question 1 of 5
If linear regression is used to model the relationship between two time series, and a test shows that one of the two time series has a unit root, we should:
B. safely use linear regression if the time series are co-integrated.
C. not use linear regression if the time series are not co-integrated.
A. not use linear regression.
B. safely use linear regression if the time series are co-integrated.
C. not use linear regression if the time series are not co-integrated.
User Contributed Comments 1
| User | Comment |
|---|---|
| wtwaf | key words: one of the two good question! |
I am using your study notes and I know of at least 5 other friends of mine who used it and passed the exam last Dec. Keep up your great work!
Barnes
Learning Outcome Statements
explain how time-series variables should be analyzed for nonstationarity and/or cointegration before use in a linear regression;
determine an appropriate time-series model to analyze a given investment problem and justify that choice.
CFA® 2025 Level II Curriculum, Volume 1, Module 5.