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Why should only one variable at a time be changed in scientific experiments?
Wiki User
∙ 11y ago
Doing so can enable you to pinpoint which independent variable had what effect on the dependent variable. If more that one variable is altered, there is no way of knowing which of them actually contributed to the change without doing further experimentation.
Wiki User
∙ 15y ago
Wiki User
∙ 12y agoThis is because if you are testing to see if A+B+C can affect Z and if you change more than one of those variables in one test you cant say which one of those changes in the variable is accountable for the affect in Z.
Wiki User
∙ 14y agobecause if more then one variable is changed at a time you can not be sure whether it was the variable or the variable that were responsible for changes in the out come.
Wiki User
∙ 12y ago- It is important because if you do then your whole experiment will be out of place ..... and rememer in an experiment you should always have 3 or more trials...
Wiki User
∙ 11y agoIf you change two variables and the experiments results change, then you do not know which one of the variables changed the experiments results.
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Should you describe simple analog experiments in your scientific report?
If the experiments were worth doing, then they are worth being reported.
What should all scientific experiments have in common?
They all have to exact measurements for everything to make it fair
What are the variables in a scientific experiment?
There are 3 different variable. The independent variable is what you will be changing in the experiment and there should only be one. The dependent variable is what you will be measuring or observing. The controlled variable is what you will be keeping the same and there can be more than one. There is no limit on how many controlled variables you can have.
Who is group that is exposed to the variable to be tested is called the?
Experiments typically involve:1) Experimental group: the group of subjects exposed to the variable being tested.2) Control group: should be as identical as possible to the experimental group, but is deliberately not exposed to the experimental variable - this provides a baseline measure from which the effect of the variable can be determined.
How can a scientific theory be incorrect but still be considered a good scientific theory?
If all the evidence taken into consideration can be explained by the scientific model proposed and the model successfully predicts outcomes of experiments yet to be performed, it is a "good scientific theory" It still can be incorrect. If it is proven incorrect it should be abandoned.
What is the only variable that should be changed to test?
Independent variable
Should you describe simple analog experiments in your scientific report?
If the experiments were worth doing, then they are worth being reported.
Scientific experiments should be done many times before a hypothesis can be supported?
False
What should all scientific experiments have in common?
They all have to exact measurements for everything to make it fair
If systems experiments and models are types of scientific tools. explain why each of these things can be considered a scientific tool?
this is an opininated question and it should be in a book
What should you include in your experiment Scientific method?
You should include answer to your problem, 1 variable, and a control group.
How do scientists go about answering a question?
how scientists go about answering a question. Use the words hypothesis, inquiry, evidence, experiment,
What are the variables in a scientific experiment?
There are 3 different variable. The independent variable is what you will be changing in the experiment and there should only be one. The dependent variable is what you will be measuring or observing. The controlled variable is what you will be keeping the same and there can be more than one. There is no limit on how many controlled variables you can have.
Is salesmen commisison a variable cost?
Variable cost would indicate that the overal commission wouldn't changed based on the volume of sales, so it should be a fixed cost instead.
Variable is an experiment that is adjusted by the experimenters?
The variable that is being changed in the experiment is called the independent variable. The variable being tested is called the dependent variable. The constant is the one thing in the experiment that stays the same
Who is group that is exposed to the variable to be tested is called the?
Experiments typically involve:1) Experimental group: the group of subjects exposed to the variable being tested.2) Control group: should be as identical as possible to the experimental group, but is deliberately not exposed to the experimental variable - this provides a baseline measure from which the effect of the variable can be determined.
How many variables can be tested at a time?
An experiment should test only one variable (the independent variable) at a time. If you are testing more than one variable at a time, you have no idea which variable is causing which effect.
