Alexander Poulos

Alexander PoulosAlexander PoulosAlexander PoulosAlexander Poulos
  • Home
  • Resume
  • Portfolio
  • Contact

Alexander Poulos

Alexander PoulosAlexander PoulosAlexander Poulos
  • Home
  • Resume
  • Portfolio
  • Contact

portfolio content

User Subscription Churn Rate

User Subscription Churn Rate

User Subscription Churn Rate

Using SQL to take a deeper look into our subscribers churn rate during Jan, Feb, Mar of 2017. 

SQL Analysis

Healthcare Cost Analysis

User Subscription Churn Rate

User Subscription Churn Rate

Here we take a look into healthcare cost for individuals with different metrics including if they have children, their age, BMI, and if they are a smoker. 

Dashboard

Usage Funnel Insights

User Subscription Churn Rate

Superstore Visualization

Taking a deeper look into the conversion rates with the number of pageviews, checkouts, & purchases of a sample data set using SQL.

SQL Analysis

Superstore Visualization

Student Loan Visualization

Superstore Visualization

The superstore data visualization sample shows sales data for a fictional chain of retail superstores across multiple locations. The data is presented in the form of interactive charts and graphs, which allow the user to explore various aspects of the sales data, such as sales by region, product category, and time period.

Dashboard

ETL with Python

Student Loan Visualization

Student Loan Visualization

The Python code script performs ETL tasks for a data analyst job by extracting data from a source file, transforming it by creating new columns and filtering it by date range, aggregating it by month, and loading it into a database.

Python Code

Student Loan Visualization

Student Loan Visualization

Student Loan Visualization

The student loan data visualization sample shows student loan debt trends and statistics for a fictional college over several years. The data is presented in the form of interactive charts and graphs, which allow the user to explore various aspects of the student loan data.

Dashboard

My Approach

It All Starts With A Question

It All Starts With A Question

It All Starts With A Question

Starting with a clear objective is an essential step in the data analysis process. By recognizing the business problem that I'm trying to solve and setting well-defined goals, it’ll be way easier to decide on the data that's necessary.

Collect & Clean

It All Starts With A Question

It All Starts With A Question

I gather all necessary and pertinent data to have a complete, 360-degree view of the problem to answer questions & avoid scope creep. The data is then cleaned by processing and formatting it in a consistent and accurate manner that allows for easy analysis and interpretation.

Analyze & Visualize

It All Starts With A Question

Analyze & Visualize

I analyze by using mathematical and statistical methods to identify patterns and trends. Once the results of the analysis have been found, I create visualizations to express findings in a clear and concise way.

THANKS FOR STOPPING BY!

Copyright © 2022 Alexander Poulos - All Rights Reserved.

Powered by GoDaddy

This website uses cookies.

We use cookies to analyze website traffic and optimize your website experience. By accepting our use of cookies, your data will be aggregated with all other user data.

Accept