Tag: Big Data
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SQL for accounting and finance professionals
If you’re an accounting or finance professional wanting to learn SQL, I’ve got good news: most of the knowledge you have of Excel or Google Sheets can be translated into SQL. Whether you’re looking at a spreadsheet or a database…
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Calculating medians and quartiles across groups in SQL
One of the best ways to understand data is through the use of descriptive statistics, figuring out the minimum and maximum values, the median value, and the quartiles. When you’re working with smaller datasets this is easy, but with larger…
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Defining big data
Buzz words have the unfortunate tendency to be often used but seldom clearly defined. Today we are going to tackle the popular phrase “big data” and strip it down to a clear definition. Overall the term is fairly self explanatory,…
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Book review: Weapons of Math Destruction by Cathy O’Neil
As big data transforms our businesses, governments and society, it also presents us with new moral and ethical dilemmas that we need to consider. As is typical with new technology, we often tend to implement first, and consider the ethical…