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Basic Question 4 of 11

When forecasts are obtained by fitting a model and computing minimum mean-square-error forecasts from the model, the differences between the observed and the fitted values are:

I. residuals from the fitted model.
II. in-sample forecast errors.
III. out-of sample forecast errors.

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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

Barnes

Learning Outcome Statements

describe the structure of an autoregressive (AR) model of order p and calculate one- and two-period-ahead forecasts given the estimated coefficients;

explain how autocorrelations of the residuals can be used to test whether the autoregressive model fits the time series;

explain mean reversion and calculate a mean-reverting level;

contrast in-sample and out-of-sample forecasts and compare the forecasting accuracy of different time-series models based on the root mean squared error criterion;

CFA® 2025 Level II Curriculum, Volume 1, Module 5.