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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 is divided into quartiles , or four rank-ordered even parts via linear interpolation. [ 1 ]
For n = 1 or 2, the midrange and the mean are equal (and coincide with the median), and are most efficient for all distributions. For n = 3, the modified mean is the median, and instead the mean is the most efficient measure of central tendency for values of γ 2 from 2.0 to 6.0 as well as from −0.8 to 2.0.
The top grade, A, is given here for performance that exceeds the mean by more than 1.5 standard deviations, a B for performance between 0.5 and 1.5 standard deviations above the mean, and so on. [17] Regardless of the absolute performance of the students, the best score in the group receives a top grade and the worst score receives a failing grade.
The middle 50% range of SAT scores for enrolled freshmen was 580–670 for critical reading, 590–680 for math, and 590–680 for writing, while the ACT Composite middle 50% range was 28–33. [126] The average high school GPA of incoming freshmen was 3.64.
Georgetown University is a private Jesuit research university in the Georgetown neighborhood of Washington, D.C., United States.Founded by Bishop John Carroll in 1789, [d] it is the oldest Catholic institution of higher education in the United States, the oldest university in Washington, D.C., [e] and the nation's first federally chartered university.
SAT Reading passages draw from three main fields: history, social studies, and science. Each SAT Reading Test always includes: one passage from U.S. or world literature; one passage from either a U.S. founding document or a related text; one passage about economics, psychology, sociology, or another social science; and, two science passages.
In 1952, mean verbal and math scores were 476 and 494, respectively, and scores were generally stable in the 1950s and early 1960s. However, starting in the mid-1960s and continuing until the early 1980s, SAT scores declined: the average verbal score dropped by about 50 points, and the average math score fell by about 30 points.
All elective courses are graded to a mean of 3.0–3.4. [34] Drexel University Drexel University Thomas R. Kline School of Law: 3.–3.10 [35] Duke University School of Law: 3.30 for 1L classes and all others with 50 or more people, 3.50 for all classes with between 10 and 49 people, and no median for classes with fewer than 10 [36]