A trip into the mind of Wajdi

Nous sommes tous connectés, nos informations personnelles sont collectées par plusieurs intervenant: les sites de réseaux sociaux, les opérateurs téléphoniques, les hôtels..etc Ces données sont collectées et analysées à l'aide des nouvelles technologies innovantes.

So I have been on the panel of the Tv show Called " The Expert ", aired on  Tounesna Tv. The show is mainly a show about the economy worldwide, but it talks about the Tunisian economy and the main events that happened in the financial world.

Intelligence Economique et  Business Intelligence: définition Collecter , organiser et structurer l'information stratégique  d'une entreprise sont des procédures indispensables aux développement et à la croissance de toute activité économique. L’intelligence économique est l'opération de collecter de traiter d'analyse et de diffuser de l'information utile aux acteurs économiques et aux décideurs dans l'objectif de fournir une vision globale et stratégique de la société. L'intelligence économique est souvent liées à l'innovation technologique et aux outils d'aide à la décision. D'où l’existence de l’informatique décisionnelle ou le Business Intelligence. Le Business Intelligence est toute technologie ou outils et processus permettant aux entreprises de collecter, consolider, modéliser et restituer les données, matérielles ou immatérielles, en vue d'offrir une aide à la décision et de permettre à un décideur d’avoir une vue d’ensemble ...

It seems like Tunisia has entered a negative cycle of attacks and terrorism is not stopping anytime soon. Following my analysis of the impact of the previous terrorist attack on the Bardo museum  in Tunisia, I have had some good feedback about the idea of the analysis. And after the unfortunate second terrorist attack on tourists in Sousse, I've wanted to explore the impact of this event as well. In the mean time, ever sense I wrote the first draft for this post, there have been more then a lot of terrorist attacks in Tunisia and the situation in general is getting complicated.

The First part and the Second part of this introduction talked about some basic things every beginner  needs to know when using SAS Macro Language. In this part we will talk about : Dynamically storing a value into a macro variable Iterative statements in macro language (Next part) Conditional statements in macro language  (Next part) 1-Dynamically storing a value into a macro variable /* Calculating an average value and storing it in a macro variable*/ Proc Means Data = SASHELP.heart noprint; Var height; Output out = test mean= avg_height; Run ;

Ever since journalists started writing the words big & data together, with large letters and quotation marks, everyone who owns a computers and a couple of Excel spreadsheets think they have a big data or they are using big data in some sort of ways. Working as a consultant means for me that my main role is to advise and help clients in understanding their needs. It also means that I should guide them, explain and simplify complex algorithms and technologies that they hear about from the web.

As I have mentioned before, I have started giving a workshop at the Higher School of Statistics and Data Analysis; The subject is the economic and statistical analysis of the Tunisian Economy. I share here this week's requirements. Hello Team, I hope you are getting excited to start working with the Data! Starting from this week, we will not have the usual presentations, as this methods seems to be a time-waster. I will look at each group's work individually and have a workshop-methodology in reviewing your work each week. (this does not mean that you are not required to present your work! I expect the same quality and format of presentations each week, and you all have to be present at the class and work on your data  and show me the problems you have if there are any)

In this post I will talk a little bit about descriptive statistics, The first thing I usually look into is central tendency because it gives me an idea about the dispersion of the data. Central tendency answers a key questions: How Data is spread out? Calculating the numbers and putting them into a table is helpful, but the best way to make sense of these numbers is to put them in graphics! First we start by calculating the most important things: Mean, Median & Mode. I advise you to read the post about the Mean Median and Mode. The best way to understand data is to visualize it throw graphics. The best graphic to understand the central tendency of a data-set is the Box-Plot (see the Wikipedia Page ) . Box-plots are generally referred to as the first descriptive statistics visualization that any data analyst should plot in order to get the first feel of the data structure. Reading a Box-Plot I have found a very nice graphic in the Flowing Data website that I...

We've seen a first introduction,  in part 1 of introduction to SAS macro programming . In this part we will try to see how to write a complete macro statement and how to use multiple variables in a single macro statement. Adding parameters to a SAS macro statement: Syntaxe: % Macro_name (Value_1,……., Value_n ); Example 1: In the example bellow, we will add a single parameter to our SAS macro that calculates basic descriptive statistics using proc means: In this case, the parameter will be the table name: %Macro AVG (Table); Proc means data =&table; run; %mend ; And now we will see the result of our macro:   %AVG (SASHELP.Shoes); This is the output we get from the macro we've just created and executed :