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Innovation Flash: Shop-Scan-Go

A digitalization idea for shopping retailers: introducing Shop-Scan-Go Business Issue (Annoyance) You know the situation: quickly pick something up at the grocery or convenience store. The bus to town leaves in less than 7 minutes. You make the somewhat ludicrous mistake to actually think you can easily hop on the bus but ….. oh no […]

Analysis of variance (ANOVA) using R

Analysis of variance (ANOVA) represents a common means to perform statistical tests as to whether there is a statistically significant difference among sample means. Though manual calculations are ok if you strive to understand the concept, however, larger examples quickly get tedious. Here, the long-standing open source R statistics package comes to our rescue. To show how R works for a simple ANOVA analysis the ensuing steps provide a quick intro as well a the source code for a fully working example.

Linear Regression using R

In a similar vein as the previous post that dealt with analysis of variance (ANOVA) let’s shift our focus on a another problem solving approach, that is, linear regression. In principle, this model gives special prominence on the ability to predict an outcome based on a given set of variables.