Also called probability, it’s a core concept in math used to measure and describe how likely random events are to happen.
It’s a statistical chart in a Cartesian coordinate system that uses the distribution of sample data points (xi, yi) to visually show the relationship between two continuous variables.
When we look at an object from a certain direction, what we see is called a view of the object.
An upper bound refers to a number that is greater than or equal to all elements, while a lower bound is a number that is less than or equal to all elements. They are used to describe the boundary of a set or the range of a function's values.
Data collection, also known as data gathering, is the first step in the data processing and analysis workflow. It refers to the process of obtaining raw information from various sources using either manual or automated techniques. The sources are diverse, including databases, sensors, the internet, business systems, and public data sources, and the data collected can be either structured or unstructured. Common methods include surveys, manual entry, and automated techniques using web crawlers, API interfaces, or log systems. This process needs to follow core principles like accuracy, completeness, timeliness, consistency, and security. Data collection forms the foundation for decision-making and innovation in statistics, business intelligence, scientific research, and many other fields.
(Social problem) is one of the important areas of sociological research. It affects the healthy lives of society members, hinders social harmony, and is a social disorder phenomenon that catches widespread public attention.
Biologists are scientists who study life phenomena, and they are divided into fields like zoology, botany, and microbiology.
A decagon is a polygon with 10 sides and 10 vertices, with an interior angle sum of 1440 degrees and a total of 35 diagonals.
A dodecagon is a flat shape with twelve sides and twelve angles, and each interior angle of a regular dodecagon is 150 degrees.