These excel datasheets have data of major earthquakes (above 6.0M) and the general index of the stock market. Excel datasheet columme explanation : Sheet 1 : index prices A) Date B) General Index Price of Stock Exchange C) pseudo variable that 0 = no earthquake and 1 = earthquake E) is the logarithmic deference between the day and the previous day Sheet 2 : earthquakes A) Date B) Magnitude C) Place of Earthquake D) Depth of earthquake Sheet 3 : output results The results of the simple regression