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Basic Question 7 of 7
The null hypothesis in the Dickey-Fuller test is that the time series has a unit root. What does rejecting this null hypothesis indicate?
A. The time series is stationary.
B. The time series is non-stationary.
C. The test is inconclusive.
D. The data has a linear trend.
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I used your notes and passed ... highly recommended!
Lauren
Learning Outcome Statements
describe implications of unit roots for time-series analysis, explain when unit roots are likely to occur and how to test for them, and demonstrate how a time series with a unit root can be transformed so it can be analyzed with an AR model;
describe the steps of the unit root test for nonstationarity and explain the relation of the test to autoregressive time-series models;
CFA® 2025 Level II Curriculum, Volume 1, Module 5.