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Author: Admin | 2025-04-28
Renewable sources (% of total) as a variable. This variable has the same limitation, and that is that it refers to the closest data, which is the year 2020, and differences may have occurred in some countries.The third variable we used was the average temperature per country in degrees Celsius. The limitation of this variable is that the 1961–1990 series was used, as we had not obtained more recent data to cover the selected sample of countries. Regarding the prohibition of mining/operation with cryptocurrencies by country, the limitation of this variable is given by the following; and that is that we have only taken as negative those countries that have “reliably” banned cryptocurrencies in their territory, but most of them have not made any pronouncement. This generates a de facto situation of illegality: it is not forbidden to operate with cryptocurrencies, but there is no clear regulatory framework either.Of the variables R&D&I research and development expenditure (% of GDP), human capital index, and most sustainable countries, we did not detect any significant limitations.Our statistical analysis sample (N) consists of 133 countries for which complete data are available, despite the fact that 144 countries appear in the initial dataset. The difference is due to missing data on the human capital index variable in several countries. After applying the regression, R-squared yields a result of 0.787. In addition, the Durbin–Watson test on our proposed model is 2.074, is very close to the value of 2, which according to this test indicates that
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