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Welcome to Chandoo.org.
My mission is to make you AWESOME in your work.

Hello, Namaste & Kia Ora. Welcome to Chandoo.org. 

My name is Chandoo. My mission is to make you awesome in Excel and Power BI.
I do this by sharing Excel & Power BI tutorials, examples, tips, videos and articles on this website. I live in Wellington, New Zealand with my beautiful wife Jo & our twins Nishanth & Nakshatra. Take a minute to browse various topics of the site to see how I can help you.

Thank you and welcome.

Analyzing half a million complaints – Customer Satisfaction Scorecard [Part 3 of 3]

This is the final part of our series on how to analyze half a million customer complaints. Click below links to read part 1 & 2.

  1. Complaint reason analysis – Part 1
  2. Regional trends & analysis – Part 2

Customer satisfaction scorecard

In the previous parts of this case study, we understood what kind of complaints were made and where they came from (states). For the customer satisfaction scorecard, let’s focus on individual companies.

Read This »

Analyzing half a million customer complaints – Regional Trends [Part 2 of 3]

This is part two of our three part series on how to analyze half a million customer complaints. Read part 1 here.

Analyzing Regional Trends

As introduced in part 1, our complaints dataset has geographical information too. We know the state & zip code for each complaint. Please note that zip codes are partial or missing for a 10% of the data.

In this article, let’s explore three ways to analyze regional trends.

  1. Regional trends by state, product & issue
  2. Complaints per million by state
  3. Complaints by zip code
Read This »

Analyzing half a million consumer complaints [Part 1 of 3]

How would you analyze data when you have lots of it? That is the inspiration for this series.

Let’s meet our data – Finance Industry Consumer Complaints

As part of open data initiatives, US government & Consumer Financial Protection Bureau maintain a list of all consumer complaints made against financial institutions (banks, credit unions etc.) You can download this data from the catalog page here. I have obtained the data on 1st of February, 2016. The download has 513,824 records. Each row contains one complaint.

In this and next two parts of the series, we are going to analyze these half a million complaints to find insights.

Read This »

Not so wild lookups

In case, this is the first time you are hearing about Excel formula wildcards, check out the Using wildcards in Excel VLOOKUP formula tutorial.

So you know about wild cards like * ?, now how would you tell VLOOKUP to ignore them?

Say, you are genuinely interested in looking the value “* Payroll” in a lookup table. What then?

This is exactly the problem faced by Peter in our forum post VLOOKUP and cells with “*” NOT to be interpreted as wildcard

Read This »
Chandoo.org Podcast Sessions

CP052: Book Review – M is for Data Monkey by Ken & Miguel

In the 52nd session of Chandoo.org podcast, let’s discuss monkeys, Ok, I am kidding. We are going to talk about M is for Data Monkey book.

What is in this session?

In this podcast,

  • Updates: Why so much gap between episodes?
  • Quick introduction to Power Query
  • Why you should get this book?
  • What is in this book?
  • A very cool example of the techniques you will learn
  • Conclusions
Read This »

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What people say about Chandoo.org

A relative told me about your website since I need help creating pivot tables, I learned how to do it in a matter of minutes thanks to your tutorial. Where have you been all of my excel troubled life, I look forward to viewing your videos on youtube as well as on your site. You are going to make me EXCELLENT at Excel!
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Hi Chandoo, I just want to say I really appreciate your Excel tutorials and all your hard work that it took to compile the huge library of content. Your site has helped me gain a better understanding of Excel which has helped me in my job. You are helping the world!
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Throughout my life as an administrative assistant; your site has been invaluable to me. And now that I’m a recruiter; it’s still an amazing resource for when I need to teach someone something quickly. You are a friggin’ Rock Star!!! Thank you for everything you do.
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Use VBA to automate your tasks and build powerful spreadsheet based apps. In this course, learn all about how to program with VBA, how to use the language and object model to your advantage. Suitable for people who build a lot of things with Excel.

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