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Using some statistical tests to determine predictive models for the production function of maize crop In Iraq for the period 1981 – 2020 | ||
| Jornal of Al-Muthanna for Agricultural Sciences | ||
| Article 1, Volume 3, Issue 1, 2015, Pages 1-17 | ||
| Abstract | ||
| Abstract: This research test stability, Test for structural or parameter stability for time series data , ( Chow test) , where the time-series data suffer from instability due to structural imbalances that are exposed through the time series data, testing has shown that the structural changes were not significant at the time series under study. It also touched on the testing the functional form of regression model (M,W,D Test ) , as it is possible to identify the correct figure function form which fits with the data obtained has been selected logarithmic linear form. Several models have been tested for anticipatory dunam yields of maize and choose what fits with our model proposed for the expected production until 2020. In light of the availability of data has been predicted output and the space to be cultivated to reach self-sufficiency up to 2020. Where he has already been to reach self-sufficiency in 1998, and the possibilities available at the time knowing that he was approximately the same productivity in the proposed research productivity dunam 545 kg / acre . | ||
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