# What do mean by Variable and their use case

Which functions do the variables serve?
In terms of cause and effect, you can think of independent and dependent variables as: The variable you think is the cause is an independent variable, while the variable you think is the effect is a dependent variable. You control the independent variable in an experiment and measure the result in the dependent variable.An overview of the various types of variables in statistics is provided in the following article. Variables are the values that change in response to the circumstances. A variable can take any form, such as a trait, a factor, or a statement that will always change as the applied environment changes. In statistics, these variables are broadly categorized as independent variables, dependent variables, categorical variables, and continuous variables. Other than these, nominal, ordinal, interval, and ratio data are stored in both quantitative and qualitative variables. Each kind of data has its own characteristics.

Different Types of Variables in Statistics

The unknown value that is not a fixed value and is expressed numerically is referred to as the variable in statistics. The variable is an algebraic term. For ease of computation, these kinds of variables are used in a variety of research fields. As a result, there are a lot of different kinds of variables that can be used in a lot of different areas. The active variable that the researcher evaluates is just one of many other variables that are briefly discussed. An antecedent variable is a variable that occurs prior to the independent variable.

1. Independent Variables

When studying the effects of dependent variables, the independent variable is computed. It is also known as experimental variables, predictor variables, or resultant variables. A manager, for instance, orders 100 workers to finish a project. He ought to be aware of each employee’s capacity. He wants to know why some people are smart and others are not. The first is that some guys will be putting in long hours to finish the project in the allotted time, and the second is that some guys are born smarter than others. A covariate variable is a variable that is similar to an independent variable but is affected by the dependent variable, but it is less common than a variable of interest.

2. Dependent Variables

In non-experimental settings, the dependent variable is also known as a criterion variable. The independent variable has served as a foundation for the dependent variable. From the preceding illustration, the primary criteria that are dependent on estimated time and IQ are the project’s productivity or completion. In this case, the IQ and estimated time are the independent variables, which may or may not influence an employee’s productivity. As a result, it makes no sense to increase an employee’s productivity by increasing their IQ or extending their estimated time.

As a result, the managers’ primary focus is on the dependent variables, which are the independent variables like the amount of time allotted to employees and their intelligence (IQ). Therefore, there is a degree of correlation between the two variables. In econometrics, the variables that are influenced by other variables are referred to as endogenous variables. Looming variables are hidden variables that affect the relationship between the dependent and independent variables. An explanatory variable is one in which an independent variable has some degree of restriction and is unaffected by any other variables.

3. Categorical Variables

It is a broad category of variables without numerical data and infinite. Statistics software refers to these variables as attribute variables or qualitative variables. These variables are further broken down into nominal, ordinal, and dichotomous categories. No inherent order exists for nominal variables. A developer, for instance, divides his environment into distinct types of networks based on how they are structured, such as peer-to-peer (P2P), cloud computing, omnipresent computing, and Internet of Things (IoT). In this case, the type of network is a nominal variable that falls into four categories. The levels or groups of the nominal variable are the various categories that it contains. Binary values, which only fall into one of two categories, are another name for dichotomous variables.

For instance, in the event that we question an individual that he possesses a vehicle, he would answer just with yes or no. Dichotomous variables are two distinct nominal variables of this kind. It only takes into account two values, like 0 or 1. It could be short or long, yes or no, etc. Nominal variables with two or more categories are known as ordinal variables. On the off chance that you see any inn input structure, it has five evaluations like superb, great, better, poor and exceptionally poor. Therefore, we can rank the level using ordinal variables that have significance for the research. It is clear, and values can be taken into account when making decisions.

4. Continuous Variables

Continuous variables are those that don’t have any boundaries and measure some count or quantity. It is possible to divide it into ratio, interval, and discrete variables. Along with a range of numerical values, the centralized attribute of interval variables is calibrated. The fact that the temperature can be calibrated in either Fahrenheit or Celsius doesn’t mean anything different; They show the ideal temperature, which is not a ratio variable at all.

It can only account for a limited set of values, such as the fact that multiple bicycles in a parking area are distinct due to the floor’s limited capacity for bike parking. Intervals are associated with ratio variables; It also includes the additional condition that zero on any measurement indicates that the variable does not have a value. Simply put, a distance of four meters is twice as far as it is wide. It works by comparing measurements. A dummy variable can be used in regression analysis to connect unlinked categorical variables in addition to those previously mentioned. For instance, if the user had the categories “owns a home” and “has a pet,” they could assign 1 to “owns a home” and 0 to “has pet.”

A control variable is a factor in an experiment that stays the same. The scientist should control the value of water and the quality of the soil in an experiment if he wants to test the plant’s light for its growth. Confounding variables are any additional variables that have a hidden effect on the experimental values that are obtained.

Recommended Articles

In statistics, this is a guide to the various types of variables. In this section, we go over the basics of statistics and the various types of variables. You can also learn more by reading the following articles:

Weak Law of Large Numbers in Statistical Analysis Simple Linear Regression in R Statistics for Machine Learning

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