نتایج جستجو برای: descriptive statistics
تعداد نتایج: 276721 فیلتر نتایج به سال:
Assessing Student Learning in First-year Quantitative Courses at Babson College: Experimental Design
From 2001-2006 we used a number of approaches to assess how well our first-year students learn statistics and mathematics when introduced to different teaching methods. The topics introduced in their two courses include those found in a standard applied probability and statistics course. For example, descriptive linear regression. Most of these assessments have been based upon analyses of opini...
Methods: A single-subject study with ABA design was applied to two Persian-speaking patients with chronic nonfluent aphasia. Assessment, baseline, intervention and maintenance phases were carried out respectively during 6 weeks. A picture naming task which was made up of pictures with high nameagreement comprising 12 target, 18 non-treated control and 5 easy words was used for probes and interv...
Sociologists know surprisingly little about the religious lives of adolescents in the United States. This article begins to redress that unfortunate lack of knowledge by examining descriptive findings on adolescent religious participation from three recent, reputable national surveys of American youth. We present descriptive statistics on three fundamental aspects of youth religious participati...
We investigate the descriptional complexity of limited propagating Lindenmayer systems and their deterministic and tabled variants with respect to the number of rules and the number of symbols. We determine the decrease of complexity when the generative capacity is increased. For incomparable families, we give languages that can be described more efficiently in either of these families than in ...
The purpose of this descriptive study was to evaluate the social support and self-esteem of coronary disease patients hospitalized for the clinical treatment of this disease. The sample consisted of 80 patients, 49 men, 52 married, and with an average age of 52 years. Interviews took place from August 2005 to July 2006. The collected data were analyzed using descriptive analysis, and the measur...
A small-area analysis (SAA) in health services research often calculates surgery rates for several small areas, compares the largest rate to the smallest, notes that the difference is large, and attempts to explain this discrepancy as a function of service availability, physician practice styles, or other factors. SAAs are often difficult to interpret because there is little theoretical basis f...
BACKGROUND Non-communicable diseases (NCDs) such as hypertension and diabetes are rapidly emerging public health problems worldwide, and they associate with primary open-angle glaucoma (POAG). POAG is the most common cause of irreversible blindness. The most effective ways to prevent glaucoma blindness involve identifying high-risk populations and conducting routine screening for early case det...
CONTEXT IS CRITICAL FOR RECOGNIZING ENVIRONMENTS AND FOR SEARCHING FOR OBJECTS WITHIN THEM: contextual associations have been shown to modulate reaction time and object recognition accuracy, as well as influence the distribution of eye movements and patterns of brain activations. However, we have not yet systematically quantified the relationships between objects and their scene environments. H...
In this paper we study the properties of systems of bounded arithmetic capturing small complexity classes and state conditions sufficient for such systems to capture the corresponding complexity class tightly. Our class of systems of bounded arithmetic is the class of secondorder systems with comprehension axiom for a syntactically restricted class of formulas Φ ⊂ Σ 1 based on a logic in the de...
Abstract Background Like many scientific fields, epidemiology is addressing issues of research reproducibility. Spatial epidemiology, which often uses the inherently identifiable variable participant address, must balance reproducibility with privacy. In this study, we assess impact several different data perturbation methods on key spatial statistics and patient Methods We analyzed patterns in...
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