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Articles tagged with #data-science
Measures of Spread How far are points from one another. Measures of Spread are used to provide us with an idea of how spread out our data are from one another. Common measures of spread includes: Range Inter-Quartile Range (IQR) Standard Deviation...
Previously, we learned about variables which allow us to store information for later use, strings which represent text, and floats which represent numbers. Now that we know the basic data types in python, we'll start using them with functions. What i...
Evaluation Contexts So now that know how to use iterators, it's time for a little review. You can get away with not having a complete understanding of them and still use them pretty successfully for a while, but often iterators can still be confusing...
Anytime we want to do anything with multiple columns, We're going to use something called an iterator. An iterator basically is like a for loop in a programming language or a cursor in SQL. It processes and expression and it does it row by row. And t...
FILTER Function Sometimes you need to apply more advanced filters. The FILTER function allows you to do that. So you might winder why we need a filter function if we can filter data using CALCULATE. Well it turns out CALCULATE is designed to be fast,...
One of the most powerful features of DAX is the ability to manipulate filters. This allows for complicated time based logic, such as previous year to date. It allows for various comparisons, like a percentage of total sales. Visuals and Pivot Tables ...