What is NumPy and why is it us...

What is NumPy and why is it used in Python?

Numpy- Also known as numerical Python, is a library used for working with arrays. It is also a general-purpose array-processing package that provides comprehensive mathematical functions, linear algebra routines, Fourier transfo... know more

Practical Data Science: Relati...

The basic relation (i.e. the table)

The term technical term “relation” can be interchanged with the standard notion we have of “tabular data,” say an instance of a “Person” relation

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Practical Data Science: Matric...

Vectors

A vector is a 1D array of values

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Practical Data Science: Visual...

Basics of visualization

Two types of visualization:

Data exploration visualization: figuring out what is true
Data presentation visualization: convincing other people it is true
We will mostly be focused on th... know more