edX Data Science Orientation – Module 1 & 2

Module 1: The Data Science Curriculum

This module explains the journey of the data science course. It is very informative and I really like the way they delivered message > Easy and Clear!

Module 2: Data Science Fundamentals

1. Working with data
2. Exploring data
3. Visualizing data
4. Slicing and dicing data
5. Pivot table and Pivot chart

As I have been working on data with Excel for few years so this module is relatively simple to me. I found one interesting part in visualising data, which is introduced by pretty Liberty (Sorry to say initially I was thinking why she is just sitting there, as a flower vase?! Surprisingly, she is actually an expert!)

Well, she introduced 2 of her favourite charts, which I am interested in:

1. Histogram
   1. Graphical representation of the distribution of numerical data.
   2. Estimate of the probability distribution of a continuous variable
2. Box and Whisker Chart
   1. Graphically depicting groups of numerical data through their quartiles in descriptive statistics
   2. Box plots may also have lines extending vertically from the boxes (whiskers) indicating variability outside the upper and lower quartiles
   3. Outliers may be plotted as individual points.

Both of them are very useful in data analysis!

Module 3, to be continued…