Create a number sequence for each change in a column in excel [Quick Tip]
Here is a quick formula trick you can use to generate sequence numbers that only increment when there is a change. Assuming the sequence of values are in column C from C3, you can write the following formula in B4 onwards (B3 will be 1, wake up…) =IF(C4=C3,B3,B3+1) Now just copy paste the formula over […]
Team To Do Lists – Project Tracking Tools using Excel [Part 2 of 6]
In today’s installment of project management using excel, we will learn about project tracking tool – to-do lists. Projects are nothing but a group of people getting together and achieving an objective – like building system or constructing a bridge. While it is important to have a overall project plan and vision, it is equally important to understand how various day to day project activities are going on. This is where to do lists can help you a lot. Read on…
Array formula to check if a number is prime [just for fun]
I am math-geek-wannabe, if there ever is such a category. During my 3rd year of graduation I went and purchased the volume 2 of Donald Knuth’s Art of Computer Programming and thus began my love with all things random and prime. I never really became the math-geek I always wanted to, instead I became an insurance expert with tons of passion for data and visualization. But when I get a chance to poke with randomness or numbers, I always lap it up with joy. And that brings us to an interesting array formula trick to check if a number is prime or not.
(assuming the number is in the cell B2) type the below formula and
=IF(MIN(MOD($B$5,ROW(INDIRECT(“2:”&INT(SQRT($B$5))))))=0,”not prime”,”prime”)
hit ctrl+shift+enter and bingo, it tells you if the number is prime or not. Read on to find how it works
Formula Debugging in Excel – Tip [spreadcheats]
Can you imagine building a complex worksheet without formulas? I can’t. While no one can dispute the usability of formulas, we all know how painful it is when an excel formula returns a mysterious error and we don’t know what is causing the error.
Advanced Data Validation Techniques in Excel [spreadcheats]
Data validation is a great way to keep your users informed about possible values in a cell and guide them to select something appropriate. As part of the spreadcheats series, in this post we will discuss 2 advanced data validation techniques that can help you when you are modeling a complex worksheet.
Learn Excel IF Formula – 5 Tricks you Didnt know
Excel has various functions, including functions to calculate inverse cosine of a given value, to multiply 2 matrices, to estimate the internal rate of return. But, most of us(well, just me then..) use just about 5-6 formulas to do our jobs. And IF formulas are a majority of these, so it doesn’t harm to learn […]