Correlation analysis between DJIA and Google, apple shares' quotations

This work is dedicated to the investigation of financial market indicators in the USA namely Dow-Jones Industrial average and share prices of two giant companies Google and Apple companies. As they are not included in the list of companies of DJIA, the aim of the work is to determine how these indexes correlate in other words the question is whether it is appropriate to say that DJIA showing the general situation in the market of stock exchange in the USA can be determined with two companies, leaders of the industries. The work considers empirical investigation in term of construction of econometric model and analysis of data within this model.