Author: Junchen Zhao. This Repository consists of my past Data Science project works as a showcase of my professional skills.

1. We want to help our developers understand what type of apps are likely to attract more users on Google play and App store through the result from this project.
2. This project is a showcase of my basic python programming ability such as the basic understanding about class types, basic python functions, and the usage of basic data structures.

1. In this project, we'll work with a data set of submissions to popular technology site Hacker News.
2. This project is a showcase of my intermidiate python programming ability such as the understanding about class structure, advanced python functions, and the usage of advanced data structures algorithms.

1. This project aims to clean the data and analyze the included used car listings.
2. At the same time, this project will explain my numpy and pandas usage skills.

1. In this project, we'll explore how using the pandas plotting functionality along with the Jupyter notebook interface allows us to explore data quickly using visualizations.
2. At the same time, this project will explain my ability of visualizing the dataset.

1. In this project, we explore the advanced features and methods of the matplotlib to actualize the efficient dataset visualization.
2. Details are in the jupyter notebook of this project folder.