25 Examples of Dependent and Independent Variables

The dependent and independent variables They are two types of variables that are studied in an investigation. The dependent variable is one that changes relative to the independent variable. The independent variable is one that produces changes in the dependent variable.

For example: In a study on the impact that the soil has on flower crops, soil type is the independent variable Y flower growth is the dependent variable, since the soil, by providing nutrients, affects the development of flowers.

Variables are properties of a population that are analyzed in statistics and in different disciplines and can acquire different values ​​(data that allow us to observe how a characteristic changes from one element to another).

In different types of research and experiments, the relationship between two or more variables is studied to establish how one event influences another. To do this, it is measured how the values ​​of the dependent variable are modified according to the changes that occur in the values ​​of the independent variable.

In this type of study, it is necessary to take into account that a variable that is considered dependent in an analysis can be independent in another and vice versa, because it depends on how the researcher establishes the causal relationship between two events.

However, to make a hypothesis scientific cause-effect, there must be a relevant theoretical basis that justifies the incidence that has a factor in a phenomenon, that is, the repercussion that the independent variable has on the variable dependent.

Characteristics of the dependent variables

Characteristics of the independent variables

Examples of dependent and independent variables

1. A study by economists on the relationship between the demand for a product (independent variable) Y the price of this (dependent variable).
2. A study by economists on the relationship between investments made in an item (independent variable) Y the position that this item has in the market (dependent variable).
3. In a study carried out by doctors, the relationship between the amount of time spent physically active (independent variable) Y the amount of time the subjects sleep (dependent variable).
4. A study carried out by biologists in which the relationship between the amount of pesticides used in an area (independent variable) Y the levels of contamination of the water of that place (dependent variable).
5. In an investigation on the operation of public transport, the relationship between the size of cities (independent variable) Y the frequency of transport (dependent variable).
6. In an epidemiological investigation, the influence of the number of inhabitants vaccinated against a disease (independent variable) in the number of people who get that disease (dependent variable).
7. In an investigation on anemia, the relationship between consumption of certain foods (independent variable) Y hemoglobin levels (dependent variable).
8. In an investigation carried out by oculists, it is sought to determine the influence that the amount of time cell phones are used (independent variable) in eye fatigue (dependent variable).
9. In an investigation carried out by doctors, the relationship between fat intake (independent variable) Y blood pressure (dependent variable).
10. In an investigation carried out by dermatologists, the aim is to determine the influence that long-term sun exposure (independent variable) in the appearance of spots on the skin (dependent variable).
11. In an investigation carried out by an NGO, the influence of awareness campaigns on energy saving (independent variable) in energy consumption (dependent variable).
12. In an investigation carried out by doctors, it is sought to determine how the number of liters of water consumed (independent variable) influences kidney function (dependent variable).
13. In an investigation carried out by biologists, the relationship between radiation exposure (independent variable) Y the changes that some plants present (dependent variable).
14. A study by doctors looks at how stress levels (independent variable) influence heart problems (dependent variable).
15. In a study carried out by business administrators, it is analyzed how the implementation of new machinery (independent variable) increases the amount of production (dependent variable).
16. In a study carried out by zoologists, it is analyzed how it influences the drought of an area (independent variable) in the feeding of the animals (dependent variable).
17. In a study carried out by environmental science researchers, it is analyzed how deforestation (independent variable) influences the average temperature of the planet (dependent variable).
18. A study by doctors looks at how performing physical activity (independent variable) upgrade blood circulation (dependent variable).
19. In an investigation carried out by gastroenterologists, it is sought to determine how coffee consumption (independent variable) can modify reflux levels of stomach acid (dependent variable).
20. In an investigation carried out by pulmonologists, the relationship between the increase in humidity in the air (independent variable) Y the increase in cases of allergy (dependent variable).
21. In a research carried out by students of educational sciences, it is sought to establish how the chosen study method (independent variable) influences academic performance (dependent variable).
22. In an investigation carried out by the Ministry of the Environment, the aim is to establish how increased use of reusable packaging (independent variable) influences the amount of garbage produced in a city (dependent variable).
23. In a study carried out by economists, the influence of devaluation (independent variable) in inflation (dependent variable).
24. In a study carried out by linguists, it is analyzed how the time spent reading (independent variable) influences spelling (dependent variable).
25. In an investigation carried out by dermatologists, the relationship between the application of hyaluronic acid to the skin (independent variable) Y decrease in wrinkles (dependent variable).

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