Data Engineering Introduction
Data engineering is the practice of designing and building systems for collecting, storing, and analyzing data. It’s about […]
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Population and Sampling
Population and Sample The population includes all objects of interest whereas the sample is only a portion of […]
Data Analytics Portfolio Projects
Are you looking to start a career in data analytics? Are you looking for some portfolio project ideas? […]
Rename a DataFrame Column in Python
As a data professional do you have a Python dataset that might require some column renaming? Why would […]
Reorder pandas DataFrame Columns
To reorder columns in a Pandas DataFrame, pass into the DataFrame a list of column names in the […]
Groupby Multiple Columns
How do you take a pandas DataFrame of data (dataset) and produce a multi-column bar chart? You can […]
Apply a Custom Function to a DataFrame
How do we apply a custom Python function to a column in a pandas DataFrame? Here we’ll use […]
Python Find Nth Occurrence of Char in a String
In Python, how would you find the Nth occurrence of a character (or substring) in a string? Yes, […]
Change String Case in pandas
There are several ways to change the case in a pandas String. There is upper, lower, title, capitalize […]
Sorting a pandas DataFrame
You can sort a pandas DataFrame by one or multiple (one or more) columns using sort_values() method and […]
Data Type Conversion in pandas
Convert Strings to Floats This post discusses one of the EDA Structuring tasks using Python and pandas. Here […]
Filtering a pandas DataFrame
How do you filter or select rows from a pandas DataFrame and have the output produce a filtered […]