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.
Thursday, January 31, 2019
Panel data - dropping cross section based on missing values
In a panel dataset, there are companies with revenues for multiple years.
I would like to drop all companies if their revenue information is missing for any year.
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