Visualization of all countries around the world — Corona is a family of viruses that consists of several members, historically been exposed to a variety of respiratory illnesses, including the common cold, severe acute respiratory illness, SARS, and MERS. The current outbreak of covid disease is a new member of this family that has not been seen in…

The great Persian mathematicians — Without any doubt, the algorithm has a unique role in data science and machine learning. Basically, problem-solving with machine programming or automation does not usually start with writing a program. Before writing a program, it is necessary to define step by step what the program should do. This step-by-step definition…

How to be smarter among others — Startup is one of the most common terms in the business world. It must have happened that one day you got tired of being an employee or doing routine tasks. If you have ever thought about starting your own business, you have probably heard the term many times. Startups are…

Cassandra Query Language — Big data is rapidly developing and has been used in various fields of science and has come up with new concepts and programs that need their own architecture to implement. One of the most important parts of this architecture is the database that can manage the required data. Unlike the…

Four levels of measurement — The variable is a feature that is measured from people or objects in the statistical community and varies from member to member and usually represented by letters. After measuring the values of variables in the statistical population, if the statistical data from the population is qualitative, we use attribute or…

Both are important in the data science ecosystem — Qualitative data is also called stratified data because it can be categorized by category. For example, suppose a student reads a paragraph from a book in one of the class sessions. The teacher who listens to the reading gives feedback on how the child reads that paragraph. This is considered…

Which one is more popular? — When you work with databases such as Excel or SQL Server these databases usually try to make the data comprehensible to the computer. In fact, structured data that we have in Excel or relational databases such as SQL Server is data that can be performed on various operations with known…

The most important foundation — Data is actually a form of raw and intact information that is intended for various uses. This type of information may not be so tangled that it is incomprehensible until it is sorted. When a researcher starts collecting raw data for his or her research project, he or she does…

The hidden treasure everywhere — Data are facts that can be obtained through observation and research. Raw materials that have not yet been processed, such as the date and amount of an invoice, the number of employees in the company, and the details of the payroll. In a simpler example; Your date of birth is…