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Why using 2 manipulated variables in an experiment would not be wise explain?
Wiki User
∙ 14y ago
Well, when something changes, you would not know which variable caused the change in the experiment.
Wiki User
∙ 14y ago
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What do scientists design to test a hypothesis?
A hypothesis is a tentative explanation for an observation, phenomenon, or scientific problem that can be tested by further investigation. Basically, it's an educated guess to a question. Testing a hypothesis is the only way to prove this statement correct or incorrect. A scientist conducts an experiement, using constants and variables, and draws conclusions against the hypothesis. This will prove it to be true or untrue.
Make a sentence using hypothesis controlled experiment and variable?
Make a sentence using hypothesis, controlled experiment and variable. Make a sentence using hypothesis, controlled experiment and variable.
Is the independent variable the thing you change?
Yes The independent variable is also known as the manipulated variable. In an experiment where you need to test different objects, the independent variable would be the different objects.
An example of a controlled experiment?
You will try to control many extraneous variables in any experiment. Many psychology and medical experiments will have a "Control Group" that has some kind of sham or placebo test, and an "Experimental Group" that receives the treatment you are testing. In medicine, if necessary the control group will receive the "standard of care". So, for example, if you wished to determine whether Dramamine prevented motion sickness, you could take 100 people that don't go out to sea frequently. Give half of them a dose of Dramamine, and give half of them a sugar cube (making them all believe they had the same "active" medication). Send them out deep sea fishing and observe complaints of nausea, or actual vomiting attacks. Use statistics to determine whether the sugar cube group (control group) got different results than the Dramamine group (experimental group). Control groups can be vital for analyzing epidemiological data. However, since the experimenter isn't personally manipulating the data, a lot of care must be taken to verify that a representative control group is chosen. For example, say you choose to "smoking" as your experimental variable, and you wish to study divorce rate among smokers compared to non-smokers. You could not ethically take a group of people and require half of them to smoke, and half of them not to smoke. You would have to take a group of people, some of which smoke, and some who don't smoke, and then either follow them through the future, or study historical data about them to determine trends. However, you will quickly find there are many confounding variables such as socio-economic status which could affect the observed variable (divorce rate). So, you might look at only doctors in similar health fields. Or only engineers, etc to eliminate as many confounding variables as possible.
Why would a scientist need to identify variables?
Variables are the basis of a scientific experiment. When the scientist is carrying out his procedure, he is actually altering a variable, called the independent variable. Unless he just likes playing with chemicals, he is likely attempting to get a result, and he does this by using measurements of the dependent variable, which has changed because of the manipulation of the independent variable. Identifying the variables becomes very important when formulating more complicated studies, and becomes the bread and butter of psychological experiments.
What are Advantages to Correlation study?
An advantage of using a correlational study is that it allows you to investigate variables that cannot be directly manipulated.
What is the name for the condition that is manipulated by scientists?
The condition that is deliberately changed using the scientific method in a controlled experiment is the independent variable. It can also be called the manipulated variable.
How do you identify variables in an experiment using materials like small three candles three bottles of different sizes and a box of matches?
We will have this type of experiment this coming Thursday. Maybe after the experiment, I can identify the Variables or when the experiment is going on. I keep on searching this question, but only this came out. Well, thanks! But, thank me, too as I will answer this question, soon.
What are controlled and uncontrolled variables in an mold experiment using milk bread bananas and cheese?
Controlled -time, temperature, location, age at start.
In an experiment what is the manipulated variable in determining whether the distance a skateboard rolls is affected by the skateboard's wheels?
because you are determining whether distance is affected by the wheels, wheels would thus be the manipulated variable. I recommend using different wheel sizes or eeven hardness, but your best bet would be to test size.
Can you explain algebra?
Algebra is using variables such as x to solve a problem. One example is x+3=8 in which x equals 5.
Explain the experiment to determine the calorific value of fuel using dulong's formula?
computer engineers nekede dpunkman was here before u
Whats the color of manipulated variable?
Depending with the language that you are using, the colour of manipulated variable can either be red, blue or green.
Causation can be proved by using an?
experiment.
How can you represent values using variables?
You can represent values using variables. This can only be done with whole numbers.
When testing a hypothesis by conducting a controlled experiment two variables are changed at a time?
It is simplest if only one variable is changed at a time, but that requires more experiments or a larger sample. That may not always be possible.However, if more two or more variables are changed at a time, it is important that the experiment is well designed so that their interaction is either nullified or can be estimated.
What is a sentence using the word manipulated variable?
manipulated variable is in the Statistics, Mathematics, Analysis subject.manipulated variable is in the Statistics, Mathematics, Analysis subject.
