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In descriptive statistics, the interquartile range (IQR) is a measure of statistical dispersion, which is the spread of the data. [1] The IQR may also be called the midspread, middle 50%, fourth spread, or H‑spread. It is defined as the difference between the 75th and 25th percentiles of the data. [2][3][4] To calculate the IQR, the data set ...
5 is a Fermat prime, a Mersenne prime exponent, as well as a Fibonacci number. 5 is the first congruent number, as well as the length of the hypotenuse of the smallest integer-sided right triangle, making part of the smallest Pythagorean triple (3, 4, 5). [1] 5 is the first safe prime, [2] and the first good prime.
Alpha particles, also called alpha rays or alpha radiation, consist of two protons and two neutrons bound together into a particle identical to a helium-4 nucleus. [5] They are generally produced in the process of alpha decay but may also be produced in other ways. Alpha particles are named after the first letter in the Greek alphabet, α.
In 2011 it was found that 46% of households paid no federal income tax, however the top 1% contributed about 25% of total taxes collected. [21] In 2014, the top 1% paid approximately 46% of the federal income taxes, excluding payroll taxes. [22] The federal payroll tax partially funds Social Security and Medicare. For the Social Security ...
The sixth season of New Zealand reality television series The Block NZ, titled The Block NZ: Side X Side, premiered on 25 June 2017. [1] It is set in the Auckland suburb of Northcote.
16.4% of the total births in 2003 were to parents of non-European origin, although they account for only 12.4% of the population in the 25-34 age group. For example, 3.8% of the births were ethnic Moroccan, although they were only 2.26% of the 25-34 age group.
The retailer charges the consumer ($1.50 × 1.10) = $1.65 and pays the government ($0.15 minus $0.12) = $0.03, leaving the same gross margin of ($1.65 – $1.32 – $0.03) = $0.30. Manufacturer and retailer gross margins are a smaller percent of the total perspective.
By 1980, over 65% were employed in services, between 25% and 30% in industry, and less than 5% in agriculture. [188] Male unemployment continued to be significantly higher than those of females (at 9.8% vs. 7.5% in 2009). The unemployment among Caucasians continues being much lower than those for African-Americans (at 8.5% vs. 15.8% also in 2009).