what are variables in science experiments? please give me an example like my experiment is how to tell if a person is lying by his body language.thank you. need answer badly!!!
i think i know what that is. its like when u set up an experiment, its the things that u r able to change in the experiment. like if u wer testin the boilin point of water and the boilin point of viniger, the variable wud be the water and the viniger. do u get me? hope this helps. x
can you tell me if i did this correct.my experiment is about how can you tell if someone is lying by their body language. my independent variable will be if i interview a person in a dim light while all person interview will be on regular or normal light. then my dependent variable will be what happens or what changes on their answers when one is interviewed in a dim light , then my controlled variable is every person was asked the same question . did i do it right because that is how i understand it. please help i need the answer badly! thanks for all your help !!!!
In science experiments, variables are factors that can change or influence the outcome of the experiment. There are three main types of variables: independent variables, dependent variables, and control variables.
In your example of determining if a person is lying by their body language, let's identify the variables involved:
1. Independent Variable: This is the variable that you manipulate or control in the experiment. In this case, it could be the specific body language cues you are observing. For example, you might choose to focus on eye contact, hand gestures, or facial expressions.
2. Dependent Variable: This is the variable that you measure or observe to see how it changes in response to the independent variable. In your experiment, the dependent variable would be whether the person is lying or telling the truth. You would assess this by comparing their body language cues to their verbal responses.
3. Control Variables: These are the variables that you keep constant or consistent throughout the experiment to ensure that any observed changes are due to the independent variable only. In your experiment, the control variables could include the setting of the interaction, the questions asked, the participant's gender, or any other factors that you want to hold constant.
It is important to have control variables to minimize the confounding factors and isolate the effect of the independent variable on the dependent variable. This helps to ensure that any observed changes in body language are specifically related to lying and not influenced by other factors.
Remember, to conduct your experiment effectively, it is essential to carefully define and identify these variables.