Difference Between Anova and Regression (With Table)

This study aims on revealing a well-descriptive outlook on the differences between Anova and regression. It focuses on presenting detailed speculation on the core meaning of the terms. Following this, the study has offered a table for marking the differences between Anova and regression concerning its parameters of comparison.

Anova vs Regression

Anova is implemented to variables that are random but regression is implemented to the variable that is independent or fixed in nature. While Anova is vastly used for measuring the common mean based on the multiple groups, Regression is vastly used for marking predictions or estimates associated with the dependent variable.

Anova or analysis of variance can be applied to the sets that have no relation to each other. It is vastly used for finding the common mean associated with the groups. Its application is streamed for random variables. Anova is grouped into fixed effect, mixed effect, and random effect. It has an error count of more than one.

Regression is applied for finding the relation among the sets of variables. It is implemented to independent or fixed variables and only one error term is associated with it which is known as residual. It can be branched into linear regression and multiple regression.

Comparison Table Between Anova And Regression

Parameters Of ComparisonAnova Regression
Anova, also known as analysis of variance is implemented to groups that are not interlinked for finding the result of their common mean.
Regression can be described as an efficient statistical procedure for forming a bond between groups of variables.
Variable nature and variables used
Anova is implemented to random variables. It is used in variables that are diverse and not particularly connected or associated with each other.
Regression is implemented to fixed or independent variables. It is used independent as well as an independent set of variables.
Utility of test

For finding out the common mean associated with various groups, Anova or Analysis of Variance is used to a large extent.Practitioners focus on using regression, largely for marking predictions or estimates based on the dependent variable.
Anova is associated with errors. Unlike the case of regression, it comes with more than one number of errors.
The presence of the error term associated with regression results in the deviation of predictions and it is known as residual. Only one error term is associated with regression.

Anova can be branched into three categories and they are as follows- fixed effect, random effect, and mixed effect.Regression is popularly classified into two forms and they are as follows- multiple regression and linear regression.

What is Anova?

Anova is the abbreviation for analysis of variance and it is a form of statistical instrument which is usually applied to a variety of variables that are random. It is associated with a set of groups that are not interlinked with each other for mapping the existence of a common mean. it segments a noticed variability located inside a set of data into the following parts- random and systematic factors. Unlike the random factors, the systematic factors offer an impact of statistics into the set of data.

In a regression study, the influence or impact of independent variables on the variables that are dependent are determined or found with the help of Anova. It is also known as the Fisher analysis of variance. Anova is the continuation of t- and z- tests. It is used to separate variance data that are observed to apply for additional examinations. If there is no establishment of variance among the groups, the F-ratio of Anova should be close to 1 or equal. ANOVA’s one-way is applied for three or more than three sets of data, for acquiring information about the existing relation between independent variables and dependent variables.

What is Regression?

Regression is known to be an efficient statistical procedure for forming a connection among the groups of variables. The regression analysis is usually used for the variables that are dependent along with one or more than one variable that is independent in nature. It is an effective method that is aligned for comprehending the impact on the dependent variable associated with one or more variables that are independent. It is a statistical procedure that is widely used in investing and finance, and other areas that have an alignment towards the prediction of character and strength of the connection or relation among a series of different variables or independent variables and one dependent variable.

The relation or connection among the variables can be understood with the help of regression. Regression can take the shape of two forms that are multiple linear regression and simple linear regression. Regression has only one error term that can also be called residual. This error term is responsible for the deviation in the results associated with regression. Based on dependent variables, regression helps the practitioners to make predictions or estimations. It is largely used in fixed variables or independent variables and works on establishing bonds or relations between multiple sets of variables.

Main Differences Between Anova and Regression

  1. Anova is applied to sets of variables that are not related to one another. On the other hand, regression is a statistical tool to form a connection among sets of variables.
  2. Anova is implemented to a variety of variables that are random and not related to one another. Whereas, regression is implemented to fixed variables or dependent and independent variables.
  3. Anova is used for finding the results of the common mean involved in various sets. On the other hand, regression is used for drawing in predictions or estimates based on variables that are dependent.
  4. Anova is associated with more than one error but regression is associated with one error term.
  5. Anova has three types- fixed effect, random effect, and mixed effect. Whereas, a regression can be classified into multiple and linear regression.


Thus, it can be concluded by saying that despite being effective statistical instruments, Anova and regression differ from each other in a lot of parameters. Anova is applied for finding the common among variables originating from different sets and unrelated to each other. Regression is applied for drawing out predictions associated with the dependent variable with the role of independent variables that are interlinked with each other. It is instrumental in proving the correctness or incorrectness of any given hypothesis. Anova is used for understanding the bonds among the groups of variables and not for marking predictions. However, regression is applied to fixed or independent natured variables and can be implemented with the help of single or multiple independent variables.


  1. https://www.jstor.org/stable/2346223
  2. https://bmcphysiol.biomedcentral.com/articles/10.1186/1472-6793-8-16
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