Monday, January 18, 2010

What is the variable and control in my experiment. Plz help project grade?

I am testing how 4 different fertilizer effects the growth of a tomato plant.





Check if i am right.





Independent Variable- The sunlight and water





Dependent Variable- The growth of the plant using for fertilizers I no i am wrong





Constant- The amount each plant getsWhat is the variable and control in my experiment. Plz help project grade?
The Independent is that thing that gets changed or manipulated.





The Dependent is the observation of that change.





The constant is the thing that never gets changed.





In your case


Ind. = fertilizer type


Dep. = rate of growth


Constants = water, sunlight, soil, temperature, air, quantity of fertilizer.





Your non-rejectable Null is probably ';Adding fertilizer improves tomato growth';.





Your Alternate is ';One fertilizer is better than the others.';





Why did I answer this question and how did I get here...???What is the variable and control in my experiment. Plz help project grade?
The independent variable is the one you are testing or more clearly the one you're changing from trial to trial. The dependent variable is the one you are measuring.





In the case of this experiment, your independent variable would be the fertilizer, our dependent would be the plant growth, and your constant would be everything else.

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