which variable is used for statistical matching? what is the purpose of data fusion in the data model and why does it be necessary? how to combine two data sets for fusion which variable is used in the data fusion? what is the purpose of using a common variable in a data fusion what is the problem with data fusion how to combine two data sets in a finite population statistical matching definition what is the problem with a combination of a random sample and data? why can i do the matching for two variables? how to combine two samples which statement best describes the problem of using the common variable x what is the fusion problem with b why is data fusion used which statement is correct when combining a data set with a random sample? what is the purpose of the fusion problem? what kind of problem is data integration why do you use variables when combining data how to make data fusion for a finite sample statistical matching for x