All articles with 'array formulas' Tag

What is the average speed of this road trip? [Solution & Discussion]

Published on Aug 18, 2014 in Excel Howtos, Formula Forensics
What is the average speed of this road trip? [Solution & Discussion]

Last week, we had an interesting homework problem – What is the average speed of this road trip?

We received more than 150 answers. But to my surprise, 57 of them are wrong. So today, lets learn how to calculate the average speed correct way.

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CP016: 3 Must have books for aspiring analysts

Published on Aug 7, 2014 in Chandoo.org Podcast Sessions
CP016: 3 Must have books for aspiring analysts

In the 16th session of Chandoo.org podcast, lets review 3 very useful books for aspiring analysts.

What is in this session?

Analytics is an increasingly popular area now. Every day, scores of fresh graduates are reporting to their first day of work as analysts. But to succeed as an analyst?

By learning & practicing of course.

And books play a vital role in opening new pathways for us. They can alter the way we think, shape our behavior and make us awesome, all in a few page turns.

So in this episode, let me share 3 must have books for (aspiring) analysts.

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Top 10 things we struggle to do in Excel & awesome remedies for them

Top 10 things we struggle to do in Excel & awesome remedies for them

Recently we asked you, what do you struggle doing in Excel? 170 people responded to this survey and shared their struggles. In this post, lets examine the top 10 struggles according to you and awesome remedies for them.

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Calculating Maximum Change [solutions & discussion]

Published on Mar 26, 2014 in Excel Howtos, Formula Forensics
Calculating Maximum Change [solutions & discussion]

Last Friday, we had a fun little Excel challenge – Calculate Maximum Change. More than 170 people commented and shared their solutions to this problem.

And the best part?

The best part is the variety of solutions & thinking displayed by our community. So if you are one of those 170, puff your chest & pat yourself on the back. Go ahead, I will wait.

Today, lets take a look at some of these awesome formulas and understand how they work. Read on and watch the video you below to gain few awesomeness pounds.

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Calculate maximum change [homework]

Published on Mar 21, 2014 in Formula Challenges
Calculate maximum change [homework]

Today, lets see how good your formula skills are.

Calculate maximum change

Can you calculate what is the maximum change in product sales between 2 months for above data?

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Combine pie and xy scatter charts – World Polls chart revisited

Combine pie and xy scatter charts – World Polls chart revisited

Few days ago, we learned how to create a pie+donut combination chart to visualize polls around the world in 2014. It generated quite a bit of interesting discussion (47 comments so far). One of the comments was from Roberto, who along with Kris & Gábor runs The FrankensTeam an online library of advanced Excel tricks, charts and other mind-boggling spreadsheet wizardry.

I really liked Roberto’s comments on the original post and a charting solution he presented. So I asked him if he can do a guest post explaining the technique to our audience. He obliged and here we go.

Over to FrankensTeam.

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Find first non-blank item in a list with formulas

Published on Jan 15, 2014 in Excel Challenges, Excel Howtos
Find first non-blank item in a list with formulas

Blank cells are an invisible pain in the analysis. Dealing with them is frustrating, time consuming and often very complex. At chandoo.org, we are not big fans of blank cells. That is why we wrote:

Today, lets talk about one more scenario. Lets say you want to find out the first non-blank item in a list. How would you do it?

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Free 2014 Calendar, daily planner templates [download]

Published on Jan 2, 2014 in Learn Excel
Free 2014 Calendar, daily planner templates [download]

Here is a New year gift to all our readers – free 2014 Excel Calendar & daily planner Template.

This calender has,

  • One page full calendar with notes, in 4 different color schemes
  • Daily event planner & tracker
  • 1 Mini calendar
  • Monthly calendar (prints to 12 pages)
  • Works for any year, just change year in Full tab.
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Formula Forensics-No. 036: Calculating Costs that Vary by Year and Age

Published on Nov 26, 2013 in Excel Howtos, Formula Forensics, Posts by Sajan

In this episode of Formula Forensics, lets talk about how to build a model where costs vary per year and age. In this example, we are talking about a plantation project. The costs & yields of plants vary by the year they are planted in and the age of plants. In this case, how do we calculate the total costs or returns with formulas?

FF36-02

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What areas of Excel scare you most? [survey]

Published on Nov 1, 2013 in Learn Excel
What areas of Excel scare you most? [survey]

Yesterday was Halloween. To our readers who are not familiar with it, ‘Halloween is a colorful festival with lots of costumes, scary stories, theme parties and trick-or-treating, celebrated on 31st October, every year.” I have never celebrated Halloween as it is an unknown tradition in India where I live. But that is no excuse. Especially when the celebration calls for colorful clothes, scary themed houses and shrieking kids.

Of course, we are not going to have a traditional Halloween. Because,

  • At our house, we use pumpkins to make sambar, not lights
  • The only ones with costumes in our house are my kids.
  • If I send my kids for trick or treat, they will get neither.

So that brings us to the only part of Halloween that I can celebrate. Telling scary stories.

So lets talk about the stuff that scares us. But bear in mind that I am not interested in that time when you & your cousin went camping and stumbled in to an abandoned log cabin to discover the …Save it for real Halloween.

We want to talk stuff that scares you in Excel of course.

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7 reasons why you should get cozy with INDEX()

Published on Sep 18, 2013 in Learn Excel
7 reasons why you should get cozy with INDEX()

Today lets get cozy. Lets start a fling (a very long one). Lets do something that will make you smart, happy and relaxed.

Don’t get any naughty ideas. I am talking about INDEX() formula.

INDEX?!?

Of all the hundreds of formulas & thousands of features in Excel, INDEX() would rank somewhere in the top 5 for me. It is a versatile, powerful, simple & smart formula. Although it looks plain, it can make huge changes to the way you analyze data, calculate numbers and present them. It is so important that, whenever I teach (live or online), I usually dedicate 25% of teaching time to INDEX().

Enough build up. Lets get cozy with INDEX.

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Calculating average of every nth value [Formula tips]

Published on Sep 5, 2013 in Excel Howtos
Calculating average of every nth value [Formula tips]

Lets say you have a large list of numbers, and you want to calculate the average of every nth value. Not the average of all numbers, but just every nth number.

That is what we will learn in next few minutes.

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How to find sum of top 3 values based on filtered criteria [video]

Published on May 17, 2013 in Excel Howtos
How to find sum of top 3 values based on filtered criteria [video]

Lets say you are looking at some data as shown above and wondering what is the sum of budgets for top 3 projects in East region with Low priority. How would you do that with formulas?

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How well do you know your LOOKUPs? – Quiz Answers & Discussion

Published on Apr 4, 2013 in Excel Howtos, Learn Excel, Quizzes
How well do you know your LOOKUPs? – Quiz Answers & Discussion

Last week, we had our very first quiz – “How well do you know your LOOKUPs?”. I hope you have enjoyed it.

Today lets understand the answers & explanations for this quiz.

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Transpose a table of data using Excel Formulas

Published on Feb 1, 2013 in Excel Howtos
Transpose a table of data using Excel Formulas

Today lets tackle a familiar data clean-up problem using Excel – Transposing data.

That is, we want to take all rows in our data & make them columns. Something like this:

Learn these 4 techniques to transpose data:
1. Using Paste Special > Transpose
2. Using INDEX formula & Helper cells
3. Using INDEX, ROWS & COLUMNS formulas
4. Using TRANSPOSE Formula

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