Research on the correlation between some factors and GDP in different countries

Abstract

The global economic situation is extremely not optimistic after the impact of the epidemic. In order to promote GDP development, countries urgently need to promulgation some policies related to GDP development. This paper is devoted to exploring the correlation between population growth rate, unemployment rate and real interest rate and GDP development, and summarizes the relationship between positive and negative correlation of each factor and national conditions, so as to provide references for various countries to choose appropriate policies in these three aspects. As for the selection of data, this paper selects 4 sets of relevant data of 5 developed countries and 5 developing countries for 13 consecutive years for calculation.  At the same time, Shapiro-Wilk test was used to judge whether the data fit the normal distribution, but most of the results did not, so Spearman correlation coefficient with loose premise was chosen. Finally, based on the data of significant correlation, we reached the following conclusions: Generally, for developed countries or populous countries, the correlation between population and GDP is generally negative. For developed European countries or countries with large geographical areas, the correlation between unemployment and GDP is generally negative. For countries with extremely high exchange rates, such as the US or the UK, real interest rates tend to have a positive correlation with GDP and a negative one.