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In statistics, the 68–95–99.7 rule, also known as the empirical rule, and sometimes abbreviated 3sr or 3 σ, is a shorthand used to remember the percentage of values that lie within an interval estimate in a normal distribution: approximately 68%, 95%, and 99.7% of the values lie within one, two, and three standard deviations of the mean ...
A qualified majority (also a supermajority) is a number of votes above a specified percentage (e.g. two-thirds); a relative majority (also a plurality) is the number of votes obtained that is greater than any other option.
The notion of a "five percent rule" appears to originate with Walter Dean Burnham's 1970 essay Critical Elections and the Mainsprings of American Politics.Page 4 of Three's a Crowd: The Dynamic of Third Parties, Ross Perot, and Republican Resurgence states "most scholars follow Walter Dean Burnham, who defined 'successful' third parties as those that attract at least 5 percent of the vote.
A two-thirds vote, when unqualified, means two-thirds or more of the votes cast. [ 9 ] [ 10 ] [ 11 ] This voting basis is equivalent to the number of votes in favor being at least twice the number of votes against. [ 12 ]
A majority is more than half of a total. [1] It is a subset of a set consisting of more than half of the set's elements. For example, if a group consists of 31 individuals, a majority would be 16 or more individuals, while having 15 or fewer individuals would not constitute a majority.
A convention to propose amendments to the United States Constitution, also referred to as an Article V Convention, state convention, [1] or amendatory convention is one of two methods authorized by Article Five of the United States Constitution whereby amendments to the United States Constitution may be proposed: on the Application of two thirds of the State legislatures (that is, 34 of the 50 ...
In the U.S. Constitution, the Three-fifths Compromise is part of Article 1, Section 2, Clause 3: . Representatives and direct Taxes shall be apportioned among the several States which may be included within this Union, according to their respective Numbers, which shall be determined by adding to the whole Number of free Persons, including those bound to Service for a Term of Years, and ...
The second quartile value (same as the median) is determined by 11×(2/4) = 5.5, which rounds up to 6. Therefore, 6 is the rank in the population (from least to greatest values) at which approximately 2/4 of the values are less than the value of the second quartile (or median). The sixth value in the population is 9. 9 Third quartile