Measuring Small Changes Versus Measurement Error

نویسندگان

چکیده

برای دانلود باید عضویت طلایی داشته باشید

برای دانلود متن کامل این مقاله و بیش از 32 میلیون مقاله دیگر ابتدا ثبت نام کنید

اگر عضو سایت هستید لطفا وارد حساب کاربری خود شوید

منابع مشابه

Measuring Test Measurement Error: A General Approach

Test-based accountability as well as value-added assessments and much experimental and quasi-experimental research in education rely on achievement tests to measure student skills and knowledge. Yet we know little regarding fundamental properties of these tests, an important example being the extent of test measurement error and its implications for educational policy and practice. While test v...

متن کامل

Small Error Versus Unbounded Error Protocols in the NOF Model

We show that a simple function has small unbounded error communication complexity in the k-party number-on-forehead (NOF) model but every probabilistic protocol that solves it with sub-exponential advantage over random guessing has cost essentially Ω (√ n 4 ) bits. Such a separation was first shown for k = 2 independently by Buhrman et al. [8] and Sherstov [24]. A very recent work of Sherstov [...

متن کامل

Measuring Effect Sizes: the Effect of Measurement Error

Value-added models in education research allow researchers to explore how a wide variety of policies and measured school inputs affect the academic performance of students. Researchers typically quantify the impacts of such interventions in terms of effect sizes, i.e., the estimated effect of a one standard deviation change in the variable divided by the standard deviation of test scores in the...

متن کامل

Correcting Measurement Error Bias in Interaction Models with Small Samples

Several methods have been suggested to estimate non-linear models with interaction terms in the presence of measurement error. Structural equation models eliminate measurement error bias, but require large samples. Ordinary least squares regression on summated scales, regression on factor scores and partial least squares are appropriate for small samples but do not correct measurement error bia...

متن کامل

Gingival Thickness Assessment: Visual versus Direct Measurement

Background and Aim: Several methods have been suggested to measure gingival thick-ness. This study aimed to assess the reliability of visual assessment of facial gingival biotype of maxillary and mandibular teeth with or without using a periodontal probe in comparison with direct measurement. Materials and Methods: Sixty-seven healthy patients (25 women and 42 men) with a total of 100 hopele...

متن کامل

ذخیره در منابع من


  با ذخیره ی این منبع در منابع من، دسترسی به آن را برای استفاده های بعدی آسان تر کنید

ژورنال

عنوان ژورنال: Journal of Bone and Mineral Research

سال: 2007

ISSN: 0884-0431

DOI: 10.1359/jbmr.071109