Abstract
ABSTRACT. This paper considers a general class of random coefficient regression (RCR) models to represent pooled cross‐sectional and time series data. A new method is given to estimate the covariance matrix of the error component in these RCR models. Also, the asymptotic and small sample properties of the estimated generalized least squares estimator of the regression coefficient vector are established. Procedures for testing a linear restriction on the mean vector of the random coefficients are derived. Finally, a test for non‐randomness in the RCR model is devised, and the asymptotic distribution of the test statistic is obtained.
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