Gross Domestic Product (GDP) is the total pecuniary or mart value of all final commodity and services that are produced within country's borders in a given time. We choose GDP to predict in Iraq since 2000 to 2018.The state and governments rely on GDP to help shape policy or decide how much public spending is affordable. Combining grey regression is a modern statistical technique of modeling, using this type of model is related to its highly accuracy therefor, in this study we used combined grey regression model to predict the gross domestic production of Iraq because it gives less Mse than grey or regression models alone which is equal to 1.3165 and estimated parameter of grey C1, regression C2 are equals to (2.9 and 0.205) respectively and the intercept C3 is equal to 1.8569 the outcome showed that the new model could attain preferable predicting result contrasted with different predicting methods.

The Arabian Plate, which is colliding with the Iranian (Eurasian) Plate, is where Iraq is located in the northeastern corner. An active Zagros seismic belt is formed by active seismicity at the interaction between the two plates. The research aims study the transition probability between the states of earthquake occurrence and estimate earthquake risk states. Use wavelet Markov chain model which is modern probability theory studies random processes for which the knowledge of previous outcomes influences predictions for future experiments. The data obtained from the Earth Scope website during the year (January 2013 to November 2022). The results show that after 115 months, the chance of an earthquake occurrence not being felt or being felt rarely is (0.009). While the chance of an earthquake occurrence being felt slightly by some people is (0.620), the chance of an earthquake occurrence being felt frequently by people is (0.124), and the chance of an earthquake occurrence being felt by the majority of people in the affected area is (0.237). Everyone believes that the last chance of an earthquake occurring (causing varying degrees of damage to poorly constructed buildings) is 0.008.