Alexandros Atzarakis
Data analyst

Personal Portfolio . Bachelor's Degree in Computer Science . Google Data analytics

August 25, 2023

Tableau Visualization

Company Attrtion Rate Analysis.

Dataset : IBM HR Analytics Employee Attrition & Performance

November 11, 2023

Data Analysis Project


In this project my main task was to make insights and distinguish patterns in order to answer the case senario.
Dataset : Stack Overflow Developer Survey 2023
Case senario : Do on-site workers get paid more on average ?.
Tools : Google Sheets , Tableau.

February 12, 2024

Data Cleanup


In this project we transpose data and validate their values .
Dataset : Dirty Dataset to practice Data Cleaning Kaggle
Case senario : Data validation and cleanup
Tools : Python pandas


August 25, 2023

Data Transformation

In this project we transform data from an excel file so they become ready for data analysis using Python .
Dataset : Dirty Data sample 1 Kaggle
Case senario : Manipulate data for data analysis
Tools : Python pandas


April 15, 2024

Amazon Dataset cleaning

Clean And Transform Data for numeric analysis.
Dataset : Audible Dataset Kaggle
Task : Data cleaning
Tools : Python , Pandas.