Wuts an independent variable, a dependent variable, a constant and a control..im doing a science experiment :)

An independent variable is the variable that does not depend on anything, like time.





The dependent variable depends on the independent variable.





Here is an example... You want to measure how irritated you get from being around your little brother as a function of time. Time passes, regardless or your irritability. But the more time passes, your irritability changes. So your irritability is dependent on the independent factor of time.





The control is something that you use to measure experimental values by. Suppose you are not sure that it is your brother making you irritable... maybe you just become irritable because you are part of the experiment. So, one day, we measure your irritability as a function of time without your brother. This is the control. That way when we measure your irritability with your brother around, we can see how these two differed.





Finally, the constant is something that doesn't change. Maybe your brother is twice as irritable as your sister. In this case, irritability is being multiplied by a constant. Maybe ritalin makes your brother less iritable by a constant amount. Maybe simply being in the room with your brother, even while he is sleeping, increases your irritability by a certain, constant, amount.Wuts an independent variable, a dependent variable, a constant and a control..im doing a science experiment :)
well i know a constant is a sample you do nothing to. you use it to compare. hope it helped a little!Wuts an independent variable, a dependent variable, a constant and a control..im doing a science experiment :)
the independent variable usually is on the x axis it sort of stands by itself the dependent variable is on the y axis, and it is just that it changes in relation to the independent variable. if for example, y=x+2 y will change according to what ever x is a constant does not change no matter what the conditions a control is usually used to make sure the experiment worked or is working, the value of the control should fall within certain limits if the experiment is working properly
Experiment means you're studying impact of one thing on another. ';One thing'; is represented by indepent variable, ';another'; - by dependent one. If you think some other things might affect dependent variable, they're controls.





Constant is the intercept term in the linear equation that links the varibles, and it means value of dependent variable if independent and controls are set to zero.





Control has a second meaning. When you test a medical drug, you split your subjects into two groups - one gets the drug, the second doesn't. First group is called treatment group, and second - control group. This is done because you cannot know (%26amp; use as control variable) great many things about your subjects - their metabolism, drug resistances, etc.