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In statistics, a sampling frame is the source material or device from which a sample is drawn. [ 1] It is a list of all those within a population who can be sampled, and may include individuals, households or institutions. [ 1] Importance of the sampling frame is stressed by Jessen [ 2] and Salant and Dillman. [ 3]
The PLATO system was launched in 1960 at the University of Illinois and subsequently commercially marketed by Control Data Corporation.It offered early forms of social media features with innovations such as Notes, PLATO's message-forum application; TERM-talk, its instant-messaging feature; Talkomatic, perhaps the first online chat room; News Report, a crowdsourced online newspaper, and blog ...
Peer review is the evaluation of work by one or more people with similar competencies as the producers of the work ( peers ). [ 1] It functions as a form of self-regulation by qualified members of a profession within the relevant field. Peer review methods are used to maintain quality standards, improve performance, and provide credibility.
Needs assessment. A needs assessment is a systematic process for determining and addressing needs, or "gaps", between current conditions, and desired conditions, or "wants". [ 1] Needs assessments can help improve policy or program decisions, individuals, education, training, organizations, communities, or products. [ 2]
The sample standard deviations for the two samples are approximately 0.05 and 0.11, respectively. For such small samples, a test of equality between the two population variances would not be very powerful. Since the sample sizes are equal, the two forms of the two-sample t-test will perform similarly in this example.
The second-oldest Latin-letter society, the P.D.A. Society ("Please Don't Ask"), in 1776 refused entry to John Heath, then a student at the college; rebuffed, he in the same year established the first Greek-letter secret society at the college, the Phi Beta Kappa, modeling it on the two older fraternities (see the Flat Hat Club). The Phi Beta ...
Given an r-sample statistic, one can create an n-sample statistic by something similar to bootstrapping (taking the average of the statistic over all subsamples of size r). This procedure is known to have certain good properties and the result is a U-statistic. The sample mean and sample variance are of this form, for r = 1 and r = 2.
A term paper is a research paper written by students over an academic term, accounting for a large part of a grade. Merriam-Webster defines it as "a major written assignment in a school or college course representative of a student's achievement during a term". [ 1] Term papers are generally intended to describe an event, a concept, or argue a ...