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In the empirical sciences, the so-called three-sigma rule of thumb (or 3 σ rule) expresses a conventional heuristic that nearly all values are taken to lie within three standard deviations of the mean, and thus it is empirically useful to treat 99.7% probability as near certainty. [2]
World map of countries shaded according to the literacy rate for all people aged 15 and over. This is a list of countries by literacy rate. The global literacy rate for all people aged 15 and above is 86.3%. The global literacy rate for all males is 90.0%, and the rate for all females is 82.7%.
This is an accepted version of this page This is the latest accepted revision, reviewed on 12 January 2025. Romance language "Castilian language" redirects here. For the specific variety of the language, see Castilian Spanish. For the broader branch of Ibero-Romance, see West Iberian languages. Spanish Castilian español castellano Pronunciation [espaˈɲol] ⓘ [kasteˈʝano ...
Italy, [a] officially the Italian Republic, [b] is a country in Southern [12] and Western [13] [c] Europe.It consists of a peninsula that extends into the Mediterranean Sea, with the Alps on its northern land border, as well as nearly 800 islands, notably Sicily and Sardinia. [15]
The list of religious populations article provides a comprehensive overview of the distribution and size of religious groups around the world. This article aims to present statistical information on the number of adherents to various religions, including major faiths such as Christianity, Islam, Hinduism, Buddhism, and others, as well as smaller religious communities.
The alphabet arose from the Phoenician script and was in turn the basis of the Latin, Cyrillic, Coptic, Gothic, and many other writing systems. The Greek language holds a very important place in the history of the Western world. Beginning with the epics of Homer, ancient Greek literature includes many works of lasting importance in the European ...
Kazakhstan, [d] officially the Republic of Kazakhstan, [e] is a landlocked country primarily in Central Asia, with a small portion situated in Eastern Europe. [f] It borders Russia to the north and west, China to the east, Kyrgyzstan to the southeast, Uzbekistan to the south, and Turkmenistan to the southwest, with a coastline along the Caspian Sea.
The form of Portuguese spoken in South America is somewhat different from that spoken in Europe, with differences in vocabulary and grammar that can be compared to the differences between American and British English, [39] but with somewhat different phonology and prosody from the remaining Portuguese-speaking countries.