All articles with 'array formulas' Tag
Over the weekend, I got an email from Mr. E, one of my students. Mr. E works at a police department in California and as part of his work, he was looking at calls received by police. Whenever police get a call for help, multiple teams can respond to the call and go to the location. All of these dispatches are recorded. So a single call can have several such dispatches. And Mr. E wanted to findout which team responded the first. The problem?
Finding the first responded team is tricky.
Today let’s take up this problem as a case study and understand various methods to solve it. We are going to learn about writing better lookups, pivot tables, power pivot and optimization. Put on your helmets, cause this is going to be mind blowingly awesome.Continue »
Okay, this is an extension of the Neither “A” Nor “B” sum problem we discussed few days back.
Imagine you have a table named mydata with a few columns and a stop list named stop.list as shown above.
How would you calculate,
- Sum of Hours for all activities excluding those in stop list?
- Sum of all Regular hours for activities not in stop list?
So go ahead and post your answers in the comments.Continue »
Today is Friday the 13th. If you are a raging friggatriskaidekaphobiac, I suggest you to stop reading this post. For the rest of you, I have something fun.
Given a year in cell C3, let’s find out all the months with Friday the 13th. Something like above.Continue »
Okay, time for another challenge.
Imagine you have some data like this. Each cell contains 3 numbers separated by line break – CHAR(10) and you need to extract the number that is 10 digits long.
Go ahead and solve this riddle.Continue »
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.
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.Continue »
Imagine you are the head of training department at ACME Inc. You arrange training programs round the year to empower your team. It is hard work, coordinating between employees, trainers, department heads, venues and coffee machines. What if there is something to help you keep track of all this? I am not talking about getting you a shiny new iPad, you silly. I am talking about a tracker & calendar built in Excel that ties everything together (well, almost everything, you still have to fill the coffee machine.)
We are going to build a training program tracker & calendar using Excel.Continue »
We all know that VLOOKUP (and its cousins MATCH, HLOOKUP and LOOKUP) are great for finding information you want. But they are helpless when you want to do a case-sensitive lookup.
So how do we write case sensitive VLOOKUP formulas?
Simple. We can use EXACT formula.Continue »
It looks up the first occurrence and returns corresponding data.
What if you want to find the last value?
Say, for example, you are looking at a task assignment list and want to know what is the last task assigned to employee Emp13?
We want to extract the task “Make amazing workbook”. Of course our good old VLOOKUP stops once it finds Emp13 and returns the answer as “Create intuitive workbook”.Continue »
Analyzing top n (or bottom m) items is an important part of any data analysis exercise. In this article, we are going to learn Excel formulas to help you with that.
Let’s say you are the lead analyst at a large retail chain in Ohio, USA. You are looking at the latest sales data for all the 300 stores. You want to calculate the total sales of top 10 stores. Read on to learn the techniques.Continue »
Who is the most consistent of all?
Imagine you are a category manager at a large e-commerce company. Your site offers various products, but you don’t really make these products. You list products made by other vendors on your site. Every day, these vendors would send you invoices for the amount of product they have sold. Above is a snapshot of such invoices.
Looking at this list, you have a few questions.
- Who is the best seller?
- Who is the most active seller?
- Who is the most consistent seller?
- Which seller has fewest invoices?
Let’s go ahead and answer these using Excel. Shall we?Continue »
This is a guest post by Sohail Anwar.
August 29, 1994. A day that changed my life forever. Football World Cup? Russia and China de-targeting nuclear weapons against each other? Anniversary of the Woodstock festival?
No, much bigger: Two Undertakers show up at WWE Summerslam for an epic battle. Needless to say: MIND() = BLOWN().
And thus begun one boy’s journey into understanding the phenomenon of Multiple Occurrences.
My journey continued, when just a few years later my grandfather handed me down a precious family heirloom: A few columns of meaningless data that I could take away and analyze in Excel. You may laugh but in the 90’s, every boy only wanted two things 1) Lists of pointless data and …Continue »
This is a guest post by Sohail Anwar.
Let’s not bore you with an intro. You are about to learn a VLOOKUP trick that Lucifer himself would not want you to know. It’s so absurdly powerful that it was developed in a lab and had to be tested on Rocky’s arch nemesis Ivan Drago.
Presenting the Multiple criteria VLOOKUP!
…boring…pass, we’ve seen it.
Oh, have you? Not like this you haven’t. This will change the way you work with Excel.
Let me start with an easy example. Here’s some data and we would love to know what Bb and Dd is.Continue »
We all know about the MAX formula. But do you know about 3D Max?
Sounds intriguing? Read on.
Lets say you are the sales analyst at ACME Inc. Your job involves drinking copious amounts of coffee, creating awesome reports & helping ACME Inc. beat competition.
For one of the reports, you need to find out the maximum transactions by any customer across months.
But there is a twist in the story.
Your data is not in one sheet. It is in multiple sheets, one per month.Continue »
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.Continue »
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.Continue »