نتایج جستجو برای: percentile estimator
تعداد نتایج: 42349 فیلتر نتایج به سال:
The asymptotic formula for the variance of a percentile estimate is inversely proportional to the square of the probability density function evaluated at that percentile. In this note we show, for small and moderate sample sizes, that the estimate of the variance can have a moderate to large coefficient of variation even when the form of the density is known. When the density must be estimated ...
The Burr type XII has been studied for various applications of lifetime modelings. However, control charts related to the Burr type XII percentiles have not been seen in the literature. In this paper, three control charts for the Burr type XII percentiles are investigated. An extensive Monte Carlo simulation study is conducted to compare among the Shewhart-type chart, and parametric bootstrap c...
OBJECTIVE Our aim was to examine the degree to which changes in BMI percentile reflect changes in body fat and lean body mass during childhood and how age and gender affect these relationships. METHODS This analysis used serial data on 494 white boys and girls who were aged 8 to 18 years and participating in the Fels Longitudinal Study (total 2319 observations). Total body fat (TBF), total bo...
The dynamic loads acting on passengers during road accidents depend not only the vehicle structure, but also properties of applied passenger and driver protection system. Two-point seat belts are most frequently used personal system for adult in bus vehicles. paper investigates thread body a 50 percentile dummy placed an armchair equipped with two-point belts. In order to solve this problem, te...
PURPOSE To compare the effectiveness of different combinations of social comparison feedback and financial incentives to increase physical activity. DESIGN Randomized trial (Clinicaltrials.gov number, NCT02030080). SETTING Philadelphia, Pennsylvania. PARTICIPANTS Two hundred eighty-six adults. INTERVENTIONS Twenty-six weeks of weekly feedback on team performance compared to the 50th per...
BACKGROUND AND OBJECTIVES New US Down syndrome (DS) BMI growth charts were recently published, but their utility in identifying children with excess adiposity or increased cardiometabolic risk (CMR) remains unknown. We sought to compare the ability of the Centers for Disease Control and Prevention (CDC) BMI 85th percentile and DS-specific BMI 85th percentile to identify excess adiposity in chil...
We consider a class of semi-parametric dynamic models with strong white noise errors. This processes includes the standard Vector Autoregressive (VAR) model, nonfundamental structural VAR, mixed causal-noncausal models, as well nonlinear such (multivariate) ARCH-M model. For estimation in this class, we propose Generalized Covariance (GCov) estimator, which is obtained by minimizing residual-ba...
نمودار تعداد نتایج جستجو در هر سال
با کلیک روی نمودار نتایج را به سال انتشار فیلتر کنید