Andy Cotgreave

Andy Cotgreave is Tableau Software’s senior data analyst in the UK. With 16+ years experience battling with good and bad Business Intelligence (BI) tools, Andy has held positions in data analysis, business research and software development. Prior to Tableau, he was a senior data analyst at the University of Oxford. He has also served in positions at Fast Track, RCP Consultants and RM, giving him a diverse range of technical and non-technical skills. He’s a frequent speaker and has spoken at conferences including Strata London, Oxford Internet Institute and News:Rewired. Andy is a graduate of the University of Edinburgh and holds an MA in Geography.

Can Data Visualisation Be Trusted?

Let me start with a controversial statement: all data visualisations are manipulative. To give you an example: Have you ever seen the Rabbit-Duck illusion where the image switches back and forth from being a duck to being a rabbit? This shows how profoundly the design of illustrations can influence audience perception. The same is also true for visualisations of data sets. But then again, shouldn&...

What Can Your Data Analytics Team Learn From Star Trek?

“Data: the final frontier. Yours are the voyages of the data analyst. Your five-year mission: to explore strange new datasets, to seek out new insights and new outliers, to boldly go where no analyst has gone before.” I’m paraphrasing, of course, a well-known refrain, from one of the most popular television series of all time. But as anyone who’s ever been part of a data analytics team...

Are You Making Hard Work Of Data Exploration?

How much data do you see every day? Whether it’s wading through lines of numbers on spreadsheets at your office or sitting at home comparing the batting averages of England’s cricket team, data has become a staple part of our daily lives. Despite this, very few of us have the tools that permit quick, effective data analysis. What many people fail to appreciate is that there’s no need to spend hour...

BI And The Bottom Line

Picture the scene. You’re a business owner with a multitude of data across your business. Naturally, you’re keen to improve your financial performance. You know that there are tools out there to easily analyse this data and enable you to identify underperforming elements in the organisation. However, instead of implementing these simple tools and increasing profitability, you decide to do nothing....

Your Data Analysis Takes HOW Long?

Imagine, for a moment, that you’ve been given a task to analyse a dataset inside sixty minutes and share your results. How far do you think you would get in that time? It’s a question I had cause to reflect on recently, after running a workshop. In the workshop, I gave people a dataset and one hour to do something cool. Their results were astounding. To understand why they were so impressive, let ...

What Can ‘Where’s Wally’ Teach Us About Data Visualisation?

Are you making a ‘Where’s Wally’ puzzle of your data analysis? At first, this might not seem like an obvious question to ask, but think about it. The challenge and enjoyment offered by Martin Handford’s puzzles stem from scanning intricate images, being visually tripped up by puns and tricks, whilst painstakingly searching for ‘Wally’. Looking for data in a spreadsheet, a vast set of rows and numb...

Why Wait In Line To Get Insight Into Your Data?

The willingness of Britons to stand patiently in line, waiting for their turn, has come to define us as a nation. It could also be a habit that harms our productivity. Today, the sheer volume of data running through businesses is increasing at an exponential rate. Unfortunately, some organisations remain intent on making them stand in line before they can use it. Too many seem happy to install a d...