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Q: What variable should you already know before you perform an experiment?
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What variable should you already know before you perform a experiment?

A manipulated variable. (Apex)


Is cooking oil a dependent or independent variable?

Well, it depends on your experiment. If you're adjusting the amount of cooking oil before an experiment, it's an independent variable. If you're calculating how much there is after the experiment, it would be a dependent variable.


What is a hypothesis variable?

A hypothesis is not a variable...it is something that you think will happen based on reasoning and observations, before doing an experiment.


What will be your dependent variable in this experiment My experiment is does chilling an onion before cutting prevent you from crying I put three onions in the freezer refrigerator and kitchen?

The dependant variable in this experiment would be the amount of 'crying' resulting from the cutting of each onion.


What is the difference between experiment and hypothesis?

An experiment is the thing that you perform, and a hypothesis is the guess you make at the start (before the experiment) to determin what's going to happen.


A variable that changes as a result of the other variable?

The dependent variable.


What are manipulated variable and responding variable?

the manipulated variable is the part of the experiment that is changed. the dependent variable is the part of the experiment that does not get changed(stays the same throughout the experiment), and the scientist use it to record the data.


What Is a predicted outcome of a experiment?

It is what you expect to happen before you actually carry out the experiment, based on the knowledge and theory you already have and know. *called a hypothesis


What do you have to do before you perform your experiment?

You want to have a hypothesis to test. A hypothesis is kind of like a reasoned guess what you expect to happen. The results of your experiment will either support your hypothesis or it wont.


What are the 3 scientific variables?

The Independent Variable : It is the ONE thing you plan to be different in the experiment. You decide on what is going to be different BEFORE doing the experiment. Dependent Variable or Outcome Variable : It is the result you compare of measure in the experiment. Controlled Variable : This is the part of the experiment that you DO NOT CHANGE. This is what STAYS THE SAME.


How can you eliminate confounding variables in your experiment?

To eliminate confounding variables, or variables that were not controlled and damaged the validity of the experiment by affecting the dependent and independent variable, the experimenter should plan ahead. They should run many checks before actually running an experiment.


Why is it important to gather information before doing an experiment?

If the answer is already a well known scientific fact, it would be a waste of time to do an experiment. It also helps you know what additional items you may need to do an experiment.