Probability: Probability is a measure of how likely an event is to occur. It is calculated by dividing the number of times the event occurs by the total number of possible outcomes. It can be expressed as a number between 0 and 1, or as a percentage between 0% and 100%.
Definition of Outlier Outlier: An outlier is a data point that is significantly different from the other points in the dataset. Outliers can be caused by errors in data collection or by natural variations in the data. They can be removed from a dataset before analysis, or they can be studied to learn more about…
Definition of Database Design Database Design: Database design is the process of designing the structure of a database. This includes defining the tables, fields, and relationships between them. Why does Database Design matter? Database design is an important factor in any data science or machine learning environment. It lays the foundation for how data is…
Definition of Database Administrator Database Administrator: A database administrator (DBA) is a professional who is responsible for the design, creation, installation, monitoring and maintenance of a database. DBAs are also responsible for ensuring that the database is available to users and that data is accurate and secure. What does a Database Administrator do? A Database…
Definition of Two-sample t-test Two-sample t-test: A two-sample t-test is a statistical hypothesis test used to determine whether the means of two samples are statistically different from each other. The test statistic is a t statistic, which is the ratio of the differences between the means of the two samples to the standard error of…
Definition of Database Management System Database Management System: A Database Management System (DBMS) is a software system that enables users to create and manage databases. A DBMS typically consists of a graphical user interface (GUI), a database engine, and a storage mechanism. The GUI allows users to create and modify database structures, enter and edit…
Definition of Temporary table Temporary table: A temporary table is a table that exists for the duration of a session. Temporary tables are useful for storing intermediate results, or for querying data that is too large to fit in memory.