翻訳と辞書
Words near each other
・ Complete-linkage clustering
・ Completed revelation
・ Completed staff work
・ Completed-contract method
・ CompleteFTP
・ Completely
・ Completely (Christian Bautista album)
・ Completely (Diamond Rio album)
・ Completely distributive lattice
・ Completely Fair Scheduler
・ Completely Free
・ Completely in Luv'
・ Completely metrizable space
・ Completely multiplicative function
・ Completely positive map
Completely randomized design
・ Completely regular semigroup
・ Completely Serious
・ Completely uniformizable space
・ Completely Well
・ Completely-S matrix
・ CompletelyNovel
・ Completement Nue Au Soleil
・ Completeness
・ Completeness (cryptography)
・ Completeness (knowledge bases)
・ Completeness (logic)
・ Completeness (order theory)
・ Completeness (statistics)
・ Completeness of atomic initial sequents


Dictionary Lists
翻訳と辞書 辞書検索 [ 開発暫定版 ]
スポンサード リンク

Completely randomized design : ウィキペディア英語版
Completely randomized design
In the design of experiments, completely randomized designs are for studying the effects of one primary factor without the need to take other nuisance variables into account. This article describes completely randomized designs that have one primary factor. The experiment compares the values of a response variable based on the different levels of that primary factor. For completely randomized designs, the levels of the primary factor are randomly assigned to the experimental units.
==Randomization==
By randomization, that is to say the run sequence of the experimental units is determined randomly. For example, if there are 3 levels of the primary factor with each level to be run 2 times, then there are 6! (where ! denotes factorial) possible run sequences (or ways to order the experimental trials). Because of the replication, the number of unique orderings is 90 (since 90 = 6!/(2!
*2!
*2!)). An example of an unrandomized design would be to always run 2 replications for the first level, then 2 for the second level, and finally 2 for the third level. To randomize the runs, one way would be to put 6 slips of paper in a box with 2 having level 1, 2 having level 2, and 2 having level 3. Before each run, one of the slips would be drawn blindly from the box and the level selected would be used for the next run of the experiment.
In practice, the randomization is typically performed by a computer program. However, the randomization can also be generated from random number tables or by some physical mechanism (e.g., drawing the slips of paper).

抄文引用元・出典: フリー百科事典『 ウィキペディア(Wikipedia)
ウィキペディアで「Completely randomized design」の詳細全文を読む



スポンサード リンク
翻訳と辞書 : 翻訳のためのインターネットリソース

Copyright(C) kotoba.ne.jp 1997-2016. All Rights Reserved.