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Konstantinos Karras's Projects

bike-sales-dashboard icon bike-sales-dashboard

Bike Sales Data Cleaned and Analyzed in Excel, resulting in 3 Pivot Tables and an interactive Dashboard with 3 different visualizations and 4 types of filtering.

data-professional-survey-breakdown icon data-professional-survey-breakdown

Recent survey conducted on 630 individuals related with the data industry, including a PowerBI dashboard, aimed for further analysis and insights.

deep-neural-network-for-car-price-prediction icon deep-neural-network-for-car-price-prediction

Complete Data Science Professional Project inspired by Datacamp's samples for the certification they provide. The sample's solutions focused on Linear Regression and Decision Tree procedures for car price estimations, so i decided to try a Deep Neural Network with results as close as the two previous methods.

housing-data-cleaning icon housing-data-cleaning

Execution of data cleaning procedures in SQL, aiming to manipulate a dataset coming from the housing industry and transform it to a form suitable for further analysis.

logistic-regression-for-absenteeism-prediction icon logistic-regression-for-absenteeism-prediction

Case Study developed during the "Data Science Course 2023: Complete Data Science Bootcamp" by Udemy. Aim of the project is to predict whether an employee of a company will be excessively absent from work in the future or not, based on data of 11 different features gathered from 700 unique entries.

pm10-value-web-scraping icon pm10-value-web-scraping

Web Scraping Project in Python Jupyter Notebook, aimed for extracting the current levels of PM10 in the atmosphere over 11 different provinces in the region of Lombardy in Italy, as well as storing these data in a .csv file, ready for future analysis and valuable insights.

spotify-hip-hop-playlist-dashboard icon spotify-hip-hop-playlist-dashboard

Project focused on exploring trends of a curated hip hop playlist on Spotify (liked by 39808 people) with an interactive dashboard. Using Python, Excel, SQL, and Tableau, I analyzed 1431 tracks, revealing insights into track, album, and artist popularity over time and genres.

sql-and-tableau-integration-for-business-insights icon sql-and-tableau-integration-for-business-insights

Case study provided and developed during the "SQL - MySQL for Data Analytics and Business Intelligence" course by Udemy. Aim of the project is to gain valuable insights into employee data from a large database, while showcasing the integration of SQL with Tableau.

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