Analysis of multiple variables, or up to 3 different from analyzing a variant of 1 or 2 at a time, by analyzing the variables one at a time or 2 variable statistics, which uses Z, t, F, Chi-squart, but the technique for analyzing multiple variables into the analysis of the relationship of Luv.Waprae 3 or more variables simultaneously, which is measured from the same unit, which will find that, in practice, the variable is associated with or related to each other in the same time more than 2 variables, such as where a medical study of heart disease with age, weight, blood lipid (Cholesterol), triglycerides, blood pressure and genetic inheritance, in which all variables may be correlated together. Multiple variable analysis to study the relationship of all the variables (Vanichbuncha, 2008)
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