Ratings and the indicators of the countries of the world: FAQ new
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# FAQ

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## How are the ratings?

The main difference between the website Countrues.World from its analogues is the availability of ratings of countries according to various criteria. The creation of the ratings by year is not so easy task as it might seem at first glance. The fact is that for many countries the values of the criteria known in different years. For example, some indicator for Europe are presented for 2012 and 2016, and for Asia in 2010 and 2014. Many sites are trying to build the ratings, compare these values. However, this is not quite true. On our site ratings are calculated assuming a uniform change of the indicator. In other words, this site compares data for 2015. Thus, in our example, a value is calculated indicator for Europe for 2015 on the assumption that it is uniformly varied from 2012 to 2016 and would be calculated the indicator for Asia on the assumption that it is uniformly varied from 2010 to 2014, and in в2015 year, this trend remained. Of course, this does not allow to calculate a ranking with absolute precision, however, this method is by far more correct to compare data of Europe for 2016, and Asia for 2014. The country rankings presented for every 5 years, starting in 1960 and ending in 2015.

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## Legend

Δmax-t - Ranesti between the maximum rating value and the value of the current country;

δt/max - the Ratio of the current country to the maximum value of the rating;

Δt min - Ranesti between the value of the current country and the minimum value of the rating;

δt/min is the Ratio of the current country to the minimum rating value;

Δt-mid - Ranesti between the value of the current country and the average rating;

δt/mid - the Ratio of the current country to the average of the rating;

V - rating of the country by value. Calculated as: the Maximum rating value is taken as 100%, minimalno for the 0% Rating V indicates the position in percentage between these two values; down Arrow mean rating in descending order, the up arrow means a rating in ascending order. For example, if the maximum meaning of the rating is 1000, and the minimum is 0 and the current value is 400, then V take a value of 40%. In the case of a rating increase, this number will be V= 60%

Rrating of the country. Calculated as: the highest rating is taken as 100%, minimum 0%. The value of R is the country''s place in the ranking, expressed in %. For example, in the ranking of the participating 50 countries. Current country occupies in the ranking of 5th place. This means that the value of R = 90%. R similarly, for the ranking in ascending order.

A = the arithmetic mean between RVIn our opinion, this is the most correct assessment of the country because it takes into account not only a country''s place in the rankings, but the difference between the values. In other words, if, for example, the population of India is much more than the population of the United States, India rating a=97,5%, and the US 61%, despite the fact that the United States ranks third in the world after China and India in population.

Δ5y = 7 253 000 (8,64%) - the value of the country 5 years ago.

V5y↘ = 91,35 % - This would be a rating of V, if the country participated in it with the value of 5-year-old.

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## Why these countries on the rankings page and on the page of the country differ?

On the page appear the data that has been obtained from one of the sources as close as possible to the current year and in the League table data of that country is displayed for 2015 (2010,2005,...). This means that the indicator data can be different for 2015 and 2016. Hence the mismatch. The exact dynamics of the data shown on the page of the evolution of the indicator in a specific country.