The People's Republic of China has an area of about 9,600,000 km2 (3,700,000 sq mi). The exact land area is sometimes challenged by border disputes, most notably about Taiwan, Aksai Chin, the Trans-Karakoram Tract, and South Tibet.
A continuous variable is a specific kind a quantitative variable used in statistics to describe data that is measurable in some way. If your data deals with measuring a height, weight, or time, then you have a continuous variable. Let's further define a couple of the terms used in our definition. A variable in statistics is not quite the same as a variable in algebra. In statistics, a variable is something that gives us data.
The opposite of a variable is a constant. A constant is a quantity that doesnât change within a specific context. In scientific experiments, variables are used as a way to group the data together. Variables can be grouped as either discrete or continuous variables. Generally, variables are characteristics of a group of objects or events that can be measured over a number of different numerical values. Discrete variables can have only a certain number of different values between two given points.