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statistics

(Encyclopedia)statistics, science of collecting and classifying a group of facts according to their relative number and determining certain values that represent characteristics of the group. The most familiar stat...

utilitarianism

(Encyclopedia)utilitarianism yo͞oˌtĭlĭtrˈēənĭzəm, yo͞otĭˌ– [key], in ethics, the theory that the rightness or wrongness of an action is determined by its usefulness in bringing about the most happines...

Thanksgiving Day

(Encyclopedia)Thanksgiving Day, national holiday in the United States commemorating the Pilgrims' celebration of the harvest reaped by the Plymouth Colony in 1621, after a winter of great starvation and privation. ...

Adler, Stella

(Encyclopedia)Adler, Stella ădˈlər [key], 1901–92, American actress, director, and acting teacher, b. New York City. The daughter of Jacob and Sarah Adler, stars in New York's Yiddish theater, she made her act...

Darwin, Charles Robert

(Encyclopedia)Darwin, Charles Robert, 1809–82, English naturalist, b. Shrewsbury; grandson of Erasmus Darwin and of Josiah Wedgwood. He firmly established the theory of organic evolution known as Darwinism. He st...

ethics

(Encyclopedia)ethics, in philosophy, the study and evaluation of human conduct in the light of moral principles. Moral principles may be viewed either as the standard of conduct that individuals have constructed fo...

Sanger, Margaret Higgins

(Encyclopedia)Sanger, Margaret Higgins, 1879–1966, American leader in the birth control movement, b. Corning, N.Y. Personal experience and work as a public-health nurse, much of it on New York City's Lower East S...

Tombaugh, Clyde William

(Encyclopedia)Tombaugh, Clyde William tŏmˈbô [key], 1906–97, American astronomer, b. Streator, Ill. Although lacking formal training or a college degree, he was hired in 1929 as an assistant by the Lowell Obse...

stratigraphy

(Encyclopedia)stratigraphy, branch of geology specifically concerned with the arrangement of layered rocks (see stratification). Stratigraphy is based on the law of superposition, which states that in a normal sequ...

Stanislavsky, Constantin

(Encyclopedia)Stanislavsky, Constantin kənstəntyēnˈ stənyĭsläfˈskē [key], 1863–1938, Russian theatrical director, teacher, and actor, whose original name was Constantin Sergeyevich Alekseyev. He was cofo...