DeltaMaster clicks! 09/2011

Analyzing relative variances that are above and below average

Greetings, fellow data analysts! Using an average for orientation doesn’t exactly sound like an ambitious goal. Nevertheless, an average is often an effective reference value when we want to classify the objects in our analytical applications. This is especially the case when we are dealing with percentage variances or changes such as “Which products, sales markets, materials, etc. have generated above-average growth and which ones haven’t?” A synonym for the average is the mean, and for our purposes we can Read More …

DeltaMaster clicks! 06/2008

Absolute, relative and weighted variance

Greetings, fellow data analysts! Consumers who are conscious about their health or figure religiously check the nutrition labels to see how much fat is in certain food. In England, on the other hand, they simply use traffic-light colors to warn of excessive salt, fat and sugar. But who knows how they define “good” or “bad” when the numbers are missing? Germany’s regulations for cheese are even better. Manufacturers are required by law to display the fat content in dry weight Read More …