When I talk in my videos about the importance of data and/or process, code documentation, I am not saying that EVERYONE can potentially make this mistake. In this article I address in an extremely concise way another point of failure of the vertical search formula, =VLOOKUP which, in the case of Google spreadsheet documentation does not ...
Yet another time when you will see me say that in statistics 80% of the time is used for obtaining, cleaning data and 20% for the fun parts like data dashboards and models. If we want to do descriptive statistics because of an aggregation of the vertical lookup, =VLOOKUP on both Excel and spreadsheets of ...
How dirty data doesn't make the vertical lookup work Read More »
Every profession has its landmarks in order to work by following good practices. Navigators used the compass, the north star. Poets the inspiration, the muse. Saints the faith. What about entrepreneurs? Not everyone has a Beatrice but all entrepreneurs and executives, as they work, leave physical or digital traces. ...
One of the first words we associate with the word future turns out to be uncertainty. In the past we relied on vicars of deities, oracles, drugs, or a mixture, to get some answers about the future. Today, being in the scientific age, closing the Comtian mention, we have various and different ways of measuring uncertainty, in a methodical, verifiable, repeatable way. In chemistry ...
Knowing the future: from magic to tarot cards, from astrology to calculators Read More »
You know those bad stories you hear about designers and architects? They deliver the design to clients. These say "nice!" only to find out that they've twisted the site, logo, architecture and more despite having paid for it. In the world of statistics you may happen to be consulting to companies that need ...
The costs of not listening to the statistician, data scientist Read More »
Today I am writing about doctors, but not those who have this label because they "know," hence learned. As Giovanni also says in a famous Aldo Giovanni and Giacomo sketch, the doctor cares about the symptoms, not the diagnosis. So many patients go to the doctor and tell him "I have x,y,z, googling I saw that the symptoms ...
Primary care physicians and statisticians, things in common. Read More »
Does statistics, or in this case data science, expire like pasteurized milk or does it have an expiration date similar to that of long-life milk? Or does statistics have the problems of electronic devices that get better every year? Does statistics have a planned obsolescence, even though milk's is a planned ...
Does statistics have obsolescence, planned obsolescence, or senescence? Read More »
Introduction One of the goals of statistics lies in explaining the variability of a phenomenon of interest by means of a mathematical expression, i.e., an equation called a model, made up of an objective (dependent) variable and explaining (explanatory, independent) variables. If the target variable has no variability, then we do not have a variable but a constant. E ...
How to recognize a computer scientist doing statistics and why you need to be careful Read More »
Suppose you have an opinion. Let us define opinion otherwise I do not establish common ground: a word that comes from Latin and means a concept that one or more persons form concerning particular facts, phenomena, manifestations, when, lacking a criterion of absolute certainty for judging their nature (or their causes, qualities, etc.), they propose ...
English 
Italian