The impact of financial development on foreign direct investment in South Africa

Secondary annual time-series data on distinct indices of financial
development were obtained from the IMF and World Bank online databases. Stationarity tests on variables were conducted using the
Augmented Dickey-Fuller approach.

从国际货币基金组织（IMF）和世界银行在线数据库中获取了关于不同金融发展指数的年度时间序列数据。对变量进行了单位根检验，采用了增强迪基-富勒（Augmented Dickey-Fuller）方法。