Dependent Variable In An Experiment Flashcards, test questions and answers
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What is Dependent Variable In An Experiment?
A dependent variable is an outcome that is observed or measured in an experiment. It is the variable that changes in response to an independent variable. The dependent variable is the result of a study; researchers measure it to see how it responds to different levels of the independent variable.In experiments, the independent variables are manipulated by the researcher, while the dependent variables are those which are affected by manipulation of the independent variables. For example, if a researcher wants to investigate how temperature affects plant growth, they would manipulate the temperature as their independent variable and measure plant growth as their dependent variable. The value of a dependent variable depends on what happened with its associated independent variables; if there was no change in any of them, then neither would be expected in the results (the value of a dependent variable). In scientific research, hypotheses are tested using experimental designs such as controlled experiments or natural experiments. In these types of studies, one or more of the factors being studied (the so-called independent variables) are manipulated while other factors (the dependent variables) are measured in order to determine how changes in one factor affect another factor(s). Dependent variables can also be used to measure changes over time from baseline data that has been collected prior to manipulation or intervention. To summarize, a dependent variable is an outcome that is observed and/or measured during an experiment and whose value depends on manipulations made with one or more associated independent variables. When designing experiments and collecting data for analysis it’s important for researchers to identify both their independent and dependent variables so they can properly interpret their results and draw meaningful conclusions from them.