TY - JOUR TT - Tests of Parameters Instability: Theoretical Study and Empirical Applications on Two Types of Models (ARMA Model and Market Model) AU - Farhanı, Sahbi PY - 2012 DA - September JF - International Journal of Economics and Financial Issues JO - IJEFI PB - İlhan ÖZTÜRK WT - DergiPark SN - 2146-4138 SP - 246 EP - 266 VL - 2 IS - 3 KW - Tests of parameters instability KW - Structural change KW - Breakpoints KW - ARMA model KW - SLRM N2 - This paper considers tests of parameters instability and structural change with known, unknown or multiple breakpoints. The results apply to a wide class of parametric models that are suitable for estimation by strong rules for detecting the number of breaks in a time series. For that, we use Chow, CUSUM, CUSUM of squares, Wald, likelihood ratio and Lagrange multiplier tests. Each test implicitly uses an estimate of a change point. We conclude with an empirical analysis on two different models (ARMA model and simple linear regression model). UR - https://dergipark.org.tr/tr/pub/ijefi/issue//351840 L1 - https://dergipark.org.tr/tr/download/article-file/362691 ER -