Specialized on Data processing, Data management Implementation plan, Data Collection tools - electronic and paper base, Data cleaning specifications, Data extraction, Data transformation, Data load, Analytical Datasets, and Data analysis. BJ Data Tech Solutions teaches on design and developing Electronic Data Collection Tools using CSPro, and STATA commands for data manipulation. Setting up Data Management systems using modern data technologies such as Relational Databases, C#, PHP and Android.
Tuesday, January 29, 2019
Blanks in polychoric matrix
Hi, does any one know the reason why the polychoric matrix often include blank values? Why is the the system unable to calculate correlation between those variables?
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