DeltaMaster clicks! 08/2015

Early warnings with clever KPIs

Greetings, fellow data analysts! Entrepreneurs and managers have hoped to gain competitive advantages from sophisticated analytic technologies long before Big Data started making headlines in daily newspapers. Our experience from countless analysis projects, however, shows that all-knowing algorithms don’t necessarily reveal the best tips on what work is yet to be done. Oftentimes, the most valuable insights come from well-thought-out KPIs that are analyzed with robust methods. The secret here is asking the right questions and figuring out how to Read More …

DeltaMaster clicks! 07/2011

Making comparisons over time with moving averages

Greetings, fellow data analysts! Long-term developments and trends that affect or are affected by daily business are an important foundation for making management decisions. Yet, it’s often not easy to recognize them – especially when your business changes from day to day or even throughout the course of the day. When you collect data every hour or minute, you often get unsteady patterns which makes it difficult to detect the base lines. One option to cope with this situation is Read More …

DeltaMaster clicks! 02/2010

Analyzing spans with scales and moving aggregations

Greetings, fellow data analysts! When people talk about ‘long-term means’, they almost always are referring to weather data. In most cases, however, they are not talking about means in their true sense but rather variances or extremes such as the hottest summer and the coldest winter. Today, it is also popular to use a similar comparison to explain the occasionally erratic events on the stock market. 52 week highs and lows or moving averages over 38, 90, 100 or 200 days Read More …