säätömuuttuja
A säätömuuttuja, or control variable in English, is a factor in a scientific experiment or study that is deliberately kept constant or unchanged throughout the entire process. The purpose of a säätömuuttuja is to ensure that it does not influence the relationship between the independent variable (the factor being manipulated) and the dependent variable (the factor being measured). By controlling other potential influences, researchers can isolate the effect of the independent variable on the dependent variable, leading to more accurate and reliable results.
For example, if a study is investigating the effect of different amounts of fertilizer on plant growth,
The identification and control of säätömuuttujat are crucial for establishing causality and drawing valid conclusions from