Entrepreneur, Product @ Holistics.io, dbdiagram.io, dbdocs.io
Working as a Product Manager at Holistics, a Business Intelligence company, I eat and sleep with data, either figuratively or literally 🤣
Since Pivot Tables are one of the most popular visualizations to present insights, it plays a significant role in my daily analysis work. However, it took me a while to get familiar with the concept for the first time since mostly all the examples are something Finance or Sales related, using random dummy datasets. But it’s easiest to develop your data knowledge when working with data sets that you already understand.
That’s how I came up with the idea of learning about pivot tables through more commonly known data points such as those of Pokemon, Football, Marvel Heroes, etc.
Basically, a Pivot Table helps you transform the data in Raw Tables into readable and meaningful insights quickly using just drag-and-drop, which we will see through more examples below.
Since it’s very powerful, the feature is available in most of the spreadsheet editors such as Excel, Google Spreadsheet, CloudPivot.co… In this tutorial, I will use CloudPivot because of its ease of sharing online.
We will use this data table below across all the examples, let’s take a look
👉 Pokemon Dataset
Some exploratory questions might pop up in your mind, for example, “How many Normal Pokemon and Legendary Pokemon are there?”. And you want to have an answer like the table below?
This, is what we call Pivot Table ✌️ How do we achieve that?
Pivot Table is the result of summarizing and grouping the raw table through these 4 properties:
Aggregated fields, numerical values that can be used for different types of calculations. For the text fields, they need to be turned into
Possible values: Count of Pokemon, Average Strength, Maximum Weight, Sum of Attack, etc.
Group same values and calculations into columns.
Group same values and calculations into one or multiple rows.
To apply filters to the entire table.
The examples above are just the beginning, with Pivot Tables, you can achieve more meaningful insights by mixing the Rows, Columns, Filters and Values area.
Another nice thing about Pivot Tables is that they make your data prepared for charts. With the example of the Legendary/Non-Legendary Pokemon above you can easily turn your pivot table into a Pie Chart like the one below
Pivot Table is a very powerful concept in data analysis, this first part might be short but I hope it’s useful for you to start as an overview.
In the next part, we will go through more complicated questions and datasets.
If you like it, follow me to get the latest update of this series and don’t hesitate to ask me any questions!