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Statistical significance. In statistical hypothesis testing, [1] [2] a result has statistical significance when a result at least as "extreme" would be very infrequent if the null hypothesis were true. [3] More precisely, a study's defined significance level, denoted by , is the probability of the study rejecting the null hypothesis, given that ...
Frederick Jackson Turner. " The Significance of the Frontier in American History " is a seminal essay by the American historian Frederick Jackson Turner which advanced the Frontier thesis of American history. Turner's thesis had a significant impact on how people in the late 19th and early 20th centuries understood American identity, character ...
Historical significance is a historiographical key concept that explores and seeks to explain the selection of particular social and cultural past events for remembrance by human societies. This element of selection involved in both ascribing and analyzing historical significance is one factor in making the discipline of history distinct from ...
The AP U.S. History course is designed to provide the same level of content and instruction that students would face in a freshman-level college survey class. It generally uses a college-level textbook as the foundation for the course and covers nine periods of U.S. history, spanning from the pre-Columbian era to the present day.
History (derived from Ancient Greek ἱστορία (historía) 'inquiry; knowledge acquired by investigation') [1] is the systematic study and documentation of the human past. [2] [3] The period of events before the invention of writing systems is considered prehistory. [4] ". History" is an umbrella term comprising past events as well as the ...
The National Grange, a.k.a. The Grange, officially named The National Grange of the Order of Patrons of Husbandry, is a social organization in the United States that encourages families to band together to promote the economic and political well-being of the community and agriculture. [1] The Grange, founded after the Civil War in 1867, is the ...
Research. A research question is "a question that a research project sets out to answer". [ 1] Choosing a research question is an essential element of both quantitative and qualitative research. Investigation will require data collection and analysis, and the methodology for this will vary widely.
Numerology. Numerology (known before the 20th century as arithmancy) is the belief in an occult, divine or mystical relationship between a number and one or more coinciding events. It is also the study of the numerical value, via an alphanumeric system, of the letters in words and names. When numerology is applied to a person's name, it is a ...