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 __   _    __   __     _____   _    _      _____  
| || | ||  \ \\/ //   / ___// | || | ||   / ___// 
| '--' ||   \ ` //    \___ \\ | || | ||   \___ \\ 
| .--. ||    | ||     /    // | \\_/ ||   /    // 
|_|| |_||    |_||    /____//   \____//   /____//  
`-`  `-`     `-`'   `-----`     `---`   `-----`

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Text this: Educational level, GDP & wages : a study on the direction of causality