The variance (σ2), is defined as the sum of the squared distances of each term in the distribution from the mean (μ), divided by the number of terms in the distribution (N).
Given a sample from a normal (or asymptotic normal) distribution, the sample variance is more often less than the population variance due to the skewed nature of the distribution of the unbiased sample estimate.
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Hiding behind the slogans of a "civilizational mission" and "establishing order in Abyssinia," the government of B. Mussolini provoked military clashes on Ethiopian borders, carried out subversive activities, trying to provoke civil strife in the country. On December 5, 1934, a serious incident occurred 100-150 km from the border with Italian Somalia in the Oual-Ouala region. The Italian garrison suddenly attacked the Ethiopian military detachment. As a result of armed provocation, both sides suffered heavy losses. The Negus government of Haile Selassie I appealed to the League of Nations with a request to prevent Italian aggression, to avert the deadly threat hanging over the country, which is a member of the League of Nations. Meanwhile, fascist states increasingly seized the initiative in international relations. This gave them significant advantages in the implementation of aggressive plans. Germany was quite satidfied that Italy's expansion was southward and, therefore, its attention to Central and Southeastern Europe, where German interests clashed with Italy, would be distracted for a long time. In addition, public opinion, the German government believed, would inevitably be riveted to the Italian aggression in Africa.
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Cave paintings are a source of information about the early human life. Substantiate. Cave art is significant because it was what people in prehistoric times did in order to record history and culture. From these cave art one can obtain information about the life of early human beings.