Alexandra Hanna

Alexandra’s inquisitive nature and drive to solve problems has meant a natural attraction to a career in science. She moved to the UK to develop research skills, becoming assertive using data handing tools like Excel, SPSS and R for molecular biology projects.

In 2015 she discovered the world of Tableau during the Data School’s application process, and is still astonished at its power and swiftness. Ready to take on the challenge of business intelligence, she strives for expanding our understanding of the world and improving performance.

Alexandra expects to unleash her creativity, whilst honing valuable skills and inspiring future Tableau users.

Outside of work, Alexandra has a passion for horticulture, enjoys cycling and going to gigs.

Power BI venture

As we head into our placements, one final challenge remains: venturing into other visualization tools. This is a review in which I examine Microsoft's self-service free visualization tool: Power BI. Initial impression is that it looks neat! Its familiarity...

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Tableau Countdown

We made it! We arrived at the last week of training at the Data School to take part of yet another exciting challenge! Create a viz a day with a twist: use Tableau version 8...7...6... Below are aspects that make Tableau version 9 really enjoyable to use.   Monday -...

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The greatest measure

This week my project required to fix the axis of multiple dot plots across several sheets in a Tableau workbook. To do this, I needed to find the possible greatest number of set of five measures which changed dynamically when applying a customer ID filter:            ...

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Tweaking Tableau Server

Understanding the underlying mechanics behind Tableau Server permits self-service troubleshooting. The following is a compilation of possible fine-tuning events. Caching: Within a rapidly changing datasource environment, it is important to frequently query new data...

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No guns allowed

Awareness worldwide of recurring gun violence in the USA grows. For this reason my visualization goes out to those affected, those who lost loved ones and those empowered to strengthen gun regulation. The message is simple: no human target. You can find my dashboard...

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Get ready for Rio 2016 with Tableau

Are you a champion, a newbie or simply an Olympic fanatic? Today my fruitful dashboard goes out to you! I was inspired by achievements of Olympic Gold, Silver and Bronze from 1972 to 2014. My aim is to encourage future winnings, check at my dashboard on the Tableau...

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Tiny data in Tableau

The week started with an stimulating challenge involving two numbers: 233 and 65. They represent the total number of Coach Kriebel's favorite Instagram likes and Twitter favorites for the week (17-23rd of August), respectively. The task was to create as many...

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Visualizing time

The last of my tips is finally here! So I have been building a calendar view in Tableau ever since I first downloaded my free trial. As it has been really effective with already two clients (out of three), I recommend you to try this at home and quickly gain the...

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Considerations when building your Tableau Server

Folks here is a quick set of tips to keep in mind when designing Tableau Server architecture. Following Ravi's post on hardware requirements, let's understand the basics! VizQL is a core component that queries data sources when a view is opened in Tableau,...

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Assortive dimensions

Because our client project with Virgin Atlantic at Data School was really successful, I wanted to share a little trick we used for improving dashboard user interactivity. I highly recommend the 'Sort by dimension' technique to be applied to an overview dashboard, for...

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Notch Gene Network

Cellular growth is  controlled by the Notch  gene. When the gene is activated it triggers a cascade of protein interactions in different parts of a cell. Mutations of any protein in the network can lead to  abnormal growth and manifest diseases like cancer. Therefore,...

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What is the government spending money on?

Welcome to Data School’s very own “Tips and Tricks Week”. Each one of us will be posting daily entries about things we have learnt in Tableau Desktop or Tableau Server, and passing the knowledge onto you. My desire to make data accessible to everyone without being...

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Postcode lottery of medical prescriptions

BIG data is propagated with every piece of technology we use, be it web surfing at home to purchasing coffee on the way to work. The potential for insight is immense! We at the Data School began to understand what the buzz was all about. Our challenge this week was to...

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Tackling maps

Perhaps the oldest type of data on our planet are ancient maps.  With geographical knowledge it was possible for our ancestors to derive directions or highlight points of interest, and this remains extremely useful TODAY. Read on for mapping application ideas...

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Real data

We finally arrived at predictive analytics with Alteryx. The ability of business forecasting makes this the BI tool-of-choice (traditionally others rely only on historical data). Chris started us of with best practice techniques: The first step is to create a sample –...

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BI curious

My first Tableau Conference on Tour 2015 was a stimulating week loaded with learning opportunities, encouraging speakers and networking coffee breaks. This brought back fond memories from biology symposia I attended during my masters. Being immersed in the data world...

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Drag and drop me into the world of Alteryx

The second week of the Data School started with a blank Alteryx canvas – the challenge being to acquire education data, cleanse and prepare it for an interactive Tableau viz. Rapidly finding large amounts of data as shown in Figure 1, I embarked on an interesting...

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Data is a vehicle for advocacy

Meeting in London with Tom and Andy to start my first week at the Data School has been one of the most amazing experiences in my life! An extremely diverse group of people has come together to understand the basic principle of our job as trainee consultants: making...

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