0
Because you need to verify that the variable being tested is actually what made the difference.
Imagine that you were testing the theory, "If I put plants in red pots, they will grow." So as a test you put plants in red pots, and they grew. That's only half of the experiment, though, because if you put plants in green pots and they also grew, then the red pots don't change anything. In this case, the plants in green pots are the control group. In order to prove that the color of the pots mattered, you would need to do two sets of tests, one without the red pots.
What else can I help you with?
Why is a control needed in a scientific experiment?
To be able to compare the results to something.
The standard for comparison in a experiment?
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.
Why is a control group needed in any experiment?
A control group creates a 'yard-stick' to measure any changes in the experiment. For example, suppose you're testing a new diet pill on 100 people - you'd only give the pill to half the group, leaving the other half as a 'control' to see if the diet pill actually works.
Why is a control needed in a scientific method?
A control is needed in the scientific method to establish a baseline for comparison. It helps ensure that any changes observed in the experiment are directly due to the independent variable, allowing researchers to rule out other influencing factors. This enhances the reliability and validity of the experiment's results.
What is the role of a control group in any experiment?
To compare data
Why a control needed in a valid experiment?
A control is needed in a valid experiment because without controls then more then one variable is being tested. This can mess up the results.
Why is a control needed in a scientific experiment?
To be able to compare the results to something.
Why did mendels experiment use pure lines?
He needed a control group. *Apex*
The standard for comparison in a experiment?
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.
Why are control not needed in the arthropods experiment described in the study guide?
The treatments can be compared to each other instead of to a control
Why is a control group needed in any experiment?
A control group creates a 'yard-stick' to measure any changes in the experiment. For example, suppose you're testing a new diet pill on 100 people - you'd only give the pill to half the group, leaving the other half as a 'control' to see if the diet pill actually works.
Why is a control needed in a scientific method?
A control is needed in the scientific method to establish a baseline for comparison. It helps ensure that any changes observed in the experiment are directly due to the independent variable, allowing researchers to rule out other influencing factors. This enhances the reliability and validity of the experiment's results.
In an experiment there are two groups. Which group is not changed in any way?
the control.constantif you make no changes, then its not called an experiment...The control is variable
Does your science experiment have to have a control?
Yes, any science experiment needs a control, or else you don't have a baseline from which to base your understanding of the rest of your data.
What is the role of a control group in any experiment?
To compare data
Why is it inportant to control variables in a experiment?
Because if you have any unknown factors you wont know how the experiment will react in any given situation.
What is the negative control in the lactose experiment?
The negative control in the lactose experiment would be a sample that does not contain lactose or the enzyme needed to break down lactose. This control is used to show what would happen if no lactose were present for the enzyme to act on.
