Helen Abell

Data Science Portfolio

Hi, I'm Helen. I'm a Software Engineer and Data Science enthusiast. This portfolio focuses on interesting projects I've recently undertaken, with a strong emphasis on business impact and data science tools and techniques. Please visit my Github & LinkedIn pages (or download my CV) by using the links below.

13 minute read

Assessing Campaign Performance Using Chi-Square Test For Independence

In this project, we use the Chi-Square Hypothesis Test to assess the performance of two types of mailers on sign-up...

5 minute read

SQL Postgresql Transaction Data Insights

Calculating Customer Retention Rate In SQL

In this post, I'm going to explore using SQL to calculate customer retention rate from a grocery store transaction data

3 minute read

Tableau Data Viz Earthquakes

Earthquake Tracking Dashboard Using Tableau

Implementing a Tableau Dashboard that tracks global Earthquake activity across a 30-day period

8 minute read

Python Numpy Images

Image Manipulation with Numpy

In this post I'm going to explore using Python and Numpy to manipulate a jpg image, and do some of the kinds...

4 minute read

Python Numpy Planets

Calculating Planet Volumes with Numpy

In this post I'm going to explore using Python and Numpy to quickly calculate all the planet volumes in the solar system!

26 minute read

Python Primes

Finding Prime Numbers with Python

Creating a function in Python that can quickly find all the Prime numbers below a given value

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