# All articles in 'Formula Forensics' Category

## Formula Forensics No. 003b – Lukes Reward – Part II

Published on Nov 10, 2014 in Formula Forensics, Huis, Posts by Hui

A Formula based solution to extract records from a table that match a number of criteria.

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

Published on Aug 18, 2014 in Excel Howtos, Formula Forensics

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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## Formula Forensics No. 037 – How to Count and Sum Filtered Tables

Published on Jul 23, 2014 in Formula Forensics, Huis, Posts by Hui

How to Count and Sum data from Filtered Tables

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## Calculating Maximum Change [solutions & discussion]

Published on Mar 26, 2014 in Excel Howtos, Formula Forensics

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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## 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?

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## Formula Forensics No. 035 Average the last 3 values greater than 0

Published on Oct 3, 2013 in Formula Forensics, Posts by Hui

Learn a technique to Average the last 3 values from a range where the values are greater than 0

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## Formula Forensics No. 34. Extract words from a cell, where they occur in a list of words.

Published on Sep 12, 2013 in Formula Forensics, Huis, Posts by Hui

Use Excel to extract matching words from a list of words from a cell containing a sentence into individual cells in the order they exist

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## Formula Forensics No. 033 – Interpolation

Published on Feb 8, 2013 in Formula Forensics, Huis, Posts by Hui

Today, Formula Forensics examines 3 techniques to determine an interpolated value along a curve.

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## Formula Forensics No. 032 – Creating Dynamic Charts with Non-Contiguous Data

Published on Dec 4, 2012 in Formula Forensics, Posts by Sajan

There are many web pages devoted to Excel Charts and there are many web pages devoted to Creating Dynamic Ranges, but a lot of these suffer when the data is poorly organised or non-contiguous.

Today we look at a Technique for Creating Dynamic Charts with Non-Contiguous Data.

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## Extract file name from full path using formulas

Published on Oct 23, 2012 in Excel Howtos, Formula Forensics

Today lets tackle a very familiar problem. You have a bunch of very long, complicated file names & paths. Your boss wants a list of files extracted from these paths, like below:

Of course nothing is impossible. You just need correct ingredients. I cannot help you with a strong cup of coffee, so go and get it. I will wait…

Back already? well, lets start the formula magic then.

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## Formula Forensics No. 031 – Production Scheduling using Excel

Published on Oct 11, 2012 in Excel Howtos, Formula Forensics, Posts by Sajan

Your the production manager and have a need to schedule uneven resource across uneven requirements, how can you do that?
Well today we’ll look at Resource Allocation and Scheduling using Excel to do the hard work

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## Formula Forensics No. 030 – Extracting a Sorted, Unique List, Grouped by Frequency of Occurrence

Published on Oct 4, 2012 in Formula Forensics, Posts by Sajan

Today at Formula Forensics, Guest author Sajan shows us how to extract a sorted, unique list of items, displaying the most frequently occurring items first, while restricting the output based on some additional criteria.

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## Formula Forensics No. 029 SumIf with Inconsistent Column Layouts

Published on Sep 20, 2012 in Formula Forensics, Huis, Posts by Hui

How do we perform a Sumif on seemingly randomly spaced columns?
Today in Formula Forensics we look at a solution to do just that.

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## Formula Forensics No. 028 – It’s Just a Jump to the Left

Published on Sep 6, 2012 in Formula Forensics, Huis, Posts by Hui, Random

VLookup is often seen as the poor cousin in the lookup function family and often gets overlooked when it comes to looking up values due to a common misconception that Vlookup doesn’t or can’t lookup values to the left of the reference value.
Today at Formula Forensics we will explode this myth and see how to make VLookup, lookup to the Left and we’ll explain how it works.

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## Formula Forensics No. 027 – Remove Leading Zeroes

Published on Aug 23, 2012 in Formula Forensics, Huis, Posts by Hui

Today in Formula Forensics we look at how to strip away leading zeroes from strings with this simple array formula

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