/ Latin squre design : LSD- wmbined Analysis of variqnce – Expected mean squres : ems Ordinary least squres: OLS

	/ Latin squre design : LSD- wmbined Analysis of variqnce – Expected mean squres : ems Ordinary least squres: OLS
journal of Economics And Administrative Sciences/ University of baghdad
Article 1, Volume 18, Issue 66, 2012, Pages 294-305
Abstract
We know that the experiments which conducted by latin square in one location or in one period (season), but there are many cases that need to conduct the same experiments in many locations or in many periods (seasons) to study the interaction between the treatments and locations or between the treatments and periods (seasons) .In this research we present an idea for conduct the experiment in several locations and in many period (seasons) by using LSD , it represent acontribution in the area of design and analysis of experiments ,we had written. we had written (theoretically) the general plans, the mathematical models for these experiments, and finding the derivations of EMS for each component (source) of sources of variation of the analysis of variance tables which uses for the statistical analysis for these experiments.
Keywords
Latin squre design; wmbined Analysis of variqnce

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