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The standard deviation σ of X is defined as which can be shown to equal. Using words, the standard deviation is the square root of the variance of X . The standard deviation of a probability distribution is the same as that of a random variable having that distribution. Not all random variables have a standard deviation.
In the Bayesian (or epistemological) interpretation, probability measures a "degree of belief". Bayes' theorem links the degree of belief in a proposition before and after accounting for evidence. For example, suppose it is believed with 50% certainty that a coin is twice as likely to land heads than tails.
The Gaza Strip is 41 kilometres (25 miles) long, from 6 to 12 km (3.7 to 7.5 mi) wide, and has a total area of 365 km 2 (141 sq mi). [27] [28] With around 2 million Palestinians [29] on approximately 365 km 2 (141 sq mi) of land, Gaza has one of the world's highest population densities.
Chocolate, or cocoa, is a food made from roasted and ground cacao seed kernels that is available as a liquid, solid, or paste, either on its own or as a flavoring agent in other foods. Cacao has been consumed in some form for at least 5,300 years starting with the Mayo-Chinchipe culture in what is present-day Ecuador. [1]
Iran, officially the Islamic Republic of Iran (IRI), also known by its Western-given name Persia, is a country in West Asia.It is bordered by Turkey to the northwest and Iraq to the west, Azerbaijan, Armenia, the Caspian Sea and Turkmenistan to the north, Afghanistan to the east, Pakistan to the southeast, the Gulf of Oman and the Persian Gulf to the south.
Satellite image of Berlin, with the Wall's location marked in yellow. West and East Berlin borders overlaying a current road map. The Berlin Wall ( German: Berliner Mauer, pronounced [bɛʁˌliːnɐ ˈmaʊɐ] ⓘ) was a guarded concrete barrier that encircled West Berlin of the Federal Republic of Germany (FRG; West Germany) from 1961 to 1989 ...
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