There are various ways to classify people. In a previous article I mentioned the “5 personality traits,” also called OCEAN. There is also a variation of the latter, called HEXACO. Young people are more familiar with the MBTI. But these turn out to be psychometric approaches. In this article I will use an approach by …
The Italian National Institute of Statistics (ISTAT) provides mortality tables, so a useful demographic resource for citizens to understand how life expectancy varies by age, region, province, etc. (conditional average). There is also the variation by occupation, educational qualification. Then there are also studies, not from ISTAT, that explain life expectancy as a function of …
Remember that you have to die: economics data science Read More »
Unfortunately, some of the words that follow have a meaning not only in statistics (or data science), but also in database administration (now data engineering), and in the galaxy of linguistic statistical models (LLM or AI). So you experience that linguistic plague, in my opinion, where a word takes on multiple meanings depending on the …
Confusing words coming from the world of data science Read More »
Every business activity generates data. In some cases these are stored messily or / and inefficiently. But in too many cases, especially in Italy, that data is not put to use. The statistician, or data scientist, first and foremost helps to bring order, partly because, as the middle school geometry and math teacher reminded …
From data to money: how data science increases turnover Read More »
Alchemists sought the philosopher’s stone, a legendary substance that could turn ordinary metals into gold. Alchemists often used symbols and coded language to hide their findings. Alchemists conducted systematic experiments to discover new chemical processes. In Italy we see this passage in Paracelsus. In addition to transmutation of substances, alchemy also aspired to spiritual elevation. …
Big data is part of that inflated set of words from the previous decade. There are various answers to this question, depending on the tool you use to do data analysis, and from the informality. When spreadsheets crash, that is, they suddenly close or are unusable because they are too slow. Despite the fact that …
In itself it is optimistic to say, as I do in my videos, that various domains of statistics, or data science, help in making more rigorous decisions, which lead to increasing turnover and/or decreasing costs. This is because we do not live in an era where we have automated decision makers. We don’t even have …
Data science alone is not enough to make better decisions Read More »
What might Massimo Recalcati (the Italian Jacques Lacan) think of the uncertainty, expressed, in this context, as statistical variability and statistical variability indices? In the garden wrapped in the shadow of sensuality, uncertainty emerges as an enigmatic entity, a female figure dressed in black veils of mystery. Her passage is like an icy wind, …
When in my videos I talk about the importance of data documentation and/or process, of the code, I’m not saying that EVERYONE can potentially make this mistake. In this article I deal in an extremely concise manner another point of failure of the vertical lookup formula, =VLOOKUP which, in the case of Google spreadsheet documentation …
Yet another time you will see me say that in statistics 80% of the time is used for obtaining and cleaning data and 20% for the fun parts like data dashboards and models. If we want to make descriptive statistics thanks to an aggregation of the vertical lookup, =VLOOKUP both on Excel and on Google …
How dirty data doesn’t make the vertical lookup work Read More »
