you have to have what is called a control group. This group consists of the test subjects that are notreceiving the test variable. For example: If i was trying to prove that 30 mins of exercise a day made for happier people, my control group would be the people that are not doing the 30 mins of exercise.
used to test a hypothesis
controlled expierment
The standard for comparison in a experiment is known as a control variable. This is useful to any experiment and serves as a reference point used to draw conclusions.
I am a control freak The control box is in the corner
no the control does nothing
used to test a hypothesis
variable
expierment definitely
yes you do need to measure with a stopwatch try expierment
A siren, a spaghetti dinner, a black cat. Better questions get better answers.
It is a Theory. In Science if its a educated guess then yes. Do an expierment to see if its true.
"I went to a school where students are studying on a physiological expierment."
it is the aspect of the expierment that acts as the control meaing you do nothing to it. i.e if you have 3 people and you test two of them with a drug and give one a placebo yet none of the three knows who is getting what. you then compare the results thus the one you gave the placebo to acts as the control.
The variable that is intentionally changed in an experiment is called the independent variable. It is the variable that you manipulate in order to observe its effect on the dependent variable.
i did a science expierment on this and it turns out that grape juice stained the teeth the most. after two weks of soaking it turned the tooth purple
controlled expierment
In a science expierment my friend did it proved that you cant teach an old dog new tricks! EVEN MORE THAN U CAN TEACH YOUNGER ONES.