Dana Voroshchuk
Originally from the Ukraine, Dana has lived most of her life in Greece before moving to Australia. She has a background in hospitality management and hotels and found her passion in data through her experience in a data oriented company. In her spare time, Dana loves films and learning kickboxing.
How to make the 80/20 Pareto Chart in Tableau
Let’s start with a little history lesson. The Pareto Chart is named after Vilfredo Pareto - an Italian civil engineer, sociologist, economist, political scientist, and philosopher. One of his discoveries was that 20% of the population in Italy unequally held 80% of...
Dashboard Week | Day 5 | OECD
And it’s finally the last day of the Dashboard Week, in which every day we had the task to create one dashboard. Today we had to use the OECD Better Life Index data set to find out which country suits us best to live in, based on some criteria that we could...
Dashboard Week | Day 4 | Victoria Roads Accidents
It’s the fourth day of Dashboard Week and today our coaches decided to show some mercy on us. They gave us data that was already clean and easy to understand - Victoria Roads Data. It was very refreshing and fun to work on it, as we had more time to work on the...
Dashboard Week | Day 3 | APIs
We are halfway through our dashboard week. Every day is a new challenge and today’s is getting data through APIs. The Challenge For those who are not familiar, APIs are ‘middlemen’ or ‘middle software' that allows two applications to talk to each other. You...
Dashboard Week | Day 2 | Who is the strongest fighter?
It’s the second day of the dashboard week here at the Data School Down Under, and 3 more days to go. Today we were challenged to create a visualization using the Olympics data set. Round 1 Coaches advice was first to think of the story we would like to tell and...
Dashboard Week | Day 1 | American Housing Survey
It’s week 14 for our cohort at the Data School Down Under, and only 3 weeks to go to finish our training. This week is very special as it’s “Dashboard Week”. Every morning we’ll be given a challenge and during the day we’ll have to get data, explore it, “massage” it...
Importance of understanding data types (Part II – Numeric/Quantitative Data Types)
As mentioned in my previous post, data types is a very important concept. You have to analyze numeric data differently than categorical; otherwise, it will result in a wrong analysis. Therefore, knowing the types of data you are dealing with allows you to choose the...
Importance of understanding data types (Part I – Categorical/ Qualitative Data Types)
When you start working with data, you might be tempted to begin creating beautiful Tableau dashboards and Alteryx workflows, without properly looking at the data set. But that’s not the way to go. Before jumping into it, it’s very important to understand the nature of...
Can you speak data?
In my first post, I explained my background and how I switched my career into data analytics. But before diving into it and becoming more technical, let me explain to you what it takes to speak the language of data. Why data analytics is so important ...
How I became a Data Analyst from being a Receptionist
Today is the first day of my new career in Data Analytics and I find it worthwhile starting my blog by describing my journey into this exciting world. My background My background lays in the hospitality industry. I studied Hotel Management in Greece...