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  2. Spearman's rank correlation coefficient - Wikipedia

    en.wikipedia.org/wiki/Spearman's_rank_correlation...

    If F(r) is the Fisher transformation of r, the sample Spearman rank correlation coefficient, and n is the sample size, then z = n − 3 1.06 F ( r ) {\displaystyle z={\sqrt {\frac {n-3}{1.06}}}F(r)} is a z -score for r , which approximately follows a standard normal distribution under the null hypothesis of statistical independence ( ρ = 0 ).

  3. Greek letters used in mathematics, science, and engineering

    en.wikipedia.org/wiki/Greek_letters_used_in...

    the population mean or expected value in probability and statistics; a measure in measure theory; micro-, an SI prefix denoting 10 −6 (one millionth) Micrometre or micron (retired in 1967 as a standalone symbol, replaced by "μm" using the standard SI meaning) the coefficient of friction in physics; the service rate in queueing theory

  4. Phi coefficient - Wikipedia

    en.wikipedia.org/wiki/Phi_coefficient

    In statistics, the phi coefficient (or mean square contingency coefficient and denoted by φ or r φ) is a measure of association for two binary variables.. In machine learning, it is known as the Matthews correlation coefficient (MCC) and used as a measure of the quality of binary (two-class) classifications, introduced by biochemist Brian W. Matthews in 1975.

  5. List of social fraternities - Wikipedia

    en.wikipedia.org/wiki/List_of_social_fraternities

    Phi Rho Eta: ΦΡΗ: 1994 National Independent Traditional Active Phi Sigma Alpha: ΦΣΑ: 1928 International CIPFI: Puerto Rican OMNE RARUM CARUM (All that is rare is wanted) Active Phi Sigma Delta: ΦΣΔ: 1909 – 1969: National NIC: Traditional Inactive [ax] Phi Sigma Epsilon: ΦΣΕ: 1910 – 1985: National NIC, Association of Teachers ...

  6. List of Asian American fraternities and sororities - Wikipedia

    en.wikipedia.org/wiki/List_of_Asian_American...

    Sigma Phi Omega: ΣΦΩ: 1949 University of Southern California: Asian Americans: Interactive 9 Active [26] Sigma Psi Zeta: ΣΨΖ: March 23, 1994: University at Albany: Asian Americans: NAPA: 20 Active [1] Sigma Sigma Rho: ΣΣΡ: December 10, 1998: St. John’s University: South Asians: NAPA: 28 Active [1] [79] Theta Kappa Phi: ΘΚΦ: June 4 ...

  7. Congeneric reliability - Wikipedia

    en.wikipedia.org/wiki/Congeneric_reliability

    In statistical models applied to psychometrics, congeneric reliability ("rho C") [1] a single-administration test score reliability (i.e., the reliability of persons over items holding occasion fixed) coefficient, commonly referred to as composite reliability, construct reliability, and coefficient omega.

  8. Sigma Phi Rho - Wikipedia

    en.wikipedia.org/wiki/Sigma_Phi_Rho

    The Rho Rhoses is the women's auxiliary group for Sigma Phi Rho. The Rho Rhoses was also founded at Wagner College on December 4, 1980. [8] To become a member of Rhoses, there are certain programs in place in order to become a fully blossom, including the Bud program. The Bud program starts the young women who are interested, as Seeds or Rose Buds.

  9. Fraternities and sororities in Canada - Wikipedia

    en.wikipedia.org/wiki/Fraternities_and...

    Omega Sigma Chi ΩΣΧ: O-Sigs April 12, 2010: Brock University: Social Local Independent 1 Active [41] [42] Phi Sigma Sigma: ΦΣΣ: Phi sigs November 26, 1913: Hunter College: Social International NPC: 0 Inactive Pi Alpha Gamma ΠΑΓ: October 18, 2011: St Thomas University: Social Local Independent 0 Inactive [43] Pi Beta Phi: ΠΒΦ: Pi Phi ...