Noncentral Composite Designs

نویسنده

  • Robert Mee
چکیده

Second-order designs are constructed by adding a second two-level design to an initial 2 or 2 experiment. I label such designs as noncentral composite designs, since they are composed of two designs with different centers. The location of the second block can be determined following analysis of the initial experiment. Noncentral composite designs provide an attractive alternative to the popular central composite designs when the location of interest shifts following an initial two-level design. An alternative family of asymmetric composite designs is also considered. The methodology is illustrated via a paper helicopter experiment.

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

ثبت نام

اگر عضو سایت هستید لطفا وارد حساب کاربری خود شوید

منابع مشابه

Computing discrete mixtures of continuous distributions: noncentral chisquare, noncentral t

In this article, we address the problem of computing the distribution functions that can be expressed as discrete mixtures of continuous distributions. Examples include noncentral chisquare, noncentral beta, noncentral F , noncentral t, and the distribution of squared sample multiple correlation. We illustrate the need for improved algorithms by pointing out situations where existing algorithms...

متن کامل

Constructing Confidence Intervals for Effect Sizes in ANOVA Designs

A confidence interval for effect sizes provides a range of plausible population effect sizes (ES) that are consistent with data. This article defines an ES as a standardized linear contrast of means. The noncentral method, Bonett's method, and the bias-corrected and accelerated bootstrap method are illustrated for constructing the confidence interval for such an effect size. Results obtained fr...

متن کامل

Efficacy of peripherally inserted central venous catheters placed in noncentral veins.

BACKGROUND Peripherally inserted central venous catheters (PICCs) are commonly used intravenous access devices in children. Although PICCs are intended to be placed in central veins, many fail to reach this location. These noncentral PICCs are used for administration of medications and isotonic solutions. OBJECTIVES To examine the efficacy of noncentral PICCs for completion of therapy, the co...

متن کامل

Calculation Methods for Wallenius' Noncentral Hypergeometric Distribution

Two different probability distributions are both known in the literature as "the" noncentral hypergeometric distribution. Wallenius' noncentral hypergeometric distribution can be described as an urn model with bias. Fisher's noncentral hypergeometric distribution is the conditional distribution of independent binomial variates given their sum. Several different methods for calculating probabili...

متن کامل

Noncentral hypergeometric distribution

Two different probability distributions are both known in the literature as "the" noncentral hypergeometric distribution. The nomenclature problems are discussed. Wallenius' noncentral hypergeometric distribution can be described as an urn model with bias. Fisher's noncentral hypergeometric distribution is the conditional distribution of independent binomial variates given their sum. Several di...

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

عنوان ژورنال:
  • Technometrics

دوره 43  شماره 

صفحات  -

تاریخ انتشار 2001