Andrew Lehm

Andrew Lehm

Andrew Lehm

Andrew joined The Data School from a background in Biomedical Science and Emergency Medicine.

Having utilised data analytics in his studies, he enjoyed the practice of distilling complex information into a digestible format, and often leveraged visuals for information transfer. A growing awareness of the widespread misuse of statistical analyses within the scientific community fostered a deeper interest in data analysis best practices, which led him to the field of data visualisation consulting.

Intrigued by the The Data School’s heavy emphasis on storytelling, Andrew applied; through the application process he became a habitual Tableau user. He places an emphasis on minimalist design.

Beyond data, Andrew is passionate about healthcare and medical ethics.

Dashboard Week Day #2

For day 2 of dashboard week we have been looking at metadata around body mounted camera usage by police officers in New Orleans. The data contains the locations, times and duration of the creation of footage.   I decided fairly quickly that the route I would like to...

Dashboard Week Day #1

Today's task was to download New York snow plow data but it was us that got plowed.   We were advised to download the data and upload it to Exasol, a columnar storage database which is super fast in Tableau for large data sets. Given that the plow data set is over...

Alteryx stats tool for beginners: part 1 – Clustering

Alteryx stats tools for beginners This will be a five part blog series providing an introduction to the Alteryx stats tools available; it is aimed at people new to statistical analysis and/or Alteryx and will give explanations of the tools and when it is appropriate...

Heat maps, heat-maps and heatmaps????

Google "heat map" and you will come across a number of drastically different charts.   I have a slap around the ears from Beth to thank for the inspiration for this blog post, so let's unpick this hotly debated area by creating a few different chart types in Tableau....

Alteryx: an introduction to parsing

Parsing: in essence, breaking down a structure into its constituent syntactical parts to analyse individually.   Today Mina walked us through one of her parsing challenges. Alteryx is a lot easier to tackle when someone is guiding you through so maybe this can be of...

Alteryx: splitting hairs (strings)

Tom and I had our first experience with Alteryx today and our afternoon task was to tidy up some data gleaned from seafood recipes online. You can see how Tom tackled the task of converting the time data from string to numerical here. My task was to split a string of...

How to create a stacked bar chart from multiple fields

Having spent my second day at the data school getting introduced to Alteryx (and banging my head against the wall), after two hours we had finally cleaned up some data (on popular seafood recipes) and loaded it into Tableau. You can see how Tom and I prepped the data...