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What else can I help you with?
What statement describes a controlled experiment?
fifteen turtles are fed iceberg lettuce and vitamins, while another fifteen turtles are fed only iceberg lettuce. :) APEX
What describes a reason for making a prediction when doing controlled experiment?
In scientific method the "prediction" is the theory that the scientific test (the experiment) is being conducted to prove (or disprove).
Which describes a reason for making a prediction when doing a controlled experiment?
To determine what sort of data table will be most useful APEX;)
In an experiment to see the effect sleep has on memory tests one group got eight hours of sleep a night and the other group got five hours a night. In this experiment what is the dependent variable?
The results of the memory test
What make an experiment a controlled experoment?
A controlled experiment is one where two similar experiments are run in parallel, differing only in the specific intervention. A perfect controlled experiment is one where the experimenter does not know which arm is which, so is looking honestly for the outcome rather than looking for confirmation of an expected outcome. This is called blinding. In medicine, a double-blinded experiment is one where both the experimenter and the subjects are unaware of which arm they are in. Blinding is important where judgment of the outcome is subjective. An experiment on a pain drug will be highly sujective so blinding is vital; an experiment on an antibiotic may not need blinding as the results could be established by serum counts. The main function of a controlled experiment is to isolate other variables in complex systems. The most familiar kind is the standard drug trial, where a drug is compared, double-blinded, in a population which is randomised between the intervention and control arms - this is known as a randomised double-blinded controlled trial, and is required for drug approvals. The control arm may be a placebo (an inert pill), or it maybe the existing treatment. Sometimes multi-arm trials are conducted: new treatment versus current treatment and placebo. The book "Bad Science" by Ben Goldacre has an excellent overview of controlled trials ad their strengths and weaknesses.
What statement describes a controlled experiment?
fifteen turtles are fed iceberg lettuce and vitamins, while another fifteen turtles are fed only iceberg lettuce. :) APEX
Why are data tables used in controlled experiment?
To help organize data and record information... APEX :D
Why did mendels experiment use pure lines?
He needed a control group. *Apex*
What Only an experiment can prove apex learning?
An experiment can show: Cause and effect (Apex).
What is the best explanation for hy a second control group was included in the experiment?
to help researchers conclude that results are related to the new drug and not to the orange juice <APEX> ^_^
What describes a reason for making a prediction when doing controlled experiment?
In scientific method the "prediction" is the theory that the scientific test (the experiment) is being conducted to prove (or disprove).
Which describes a reason for making a prediction when doing a controlled experiment?
To determine what sort of data table will be most useful APEX;)
In an experiment to see the effect sleep has on memory tests one group got eight hours of sleep a night and the other group got five hours a night. In this experiment what is the dependent variable?
The results of the memory test
What describes the independent variable?
The variable is an experiment that is manipulated by the scientist. APEX
What describes an independent variableWhich of the following describes an independent variable?
for Apex: the variable is an experiment that is manipulated by the scientist.
Why did mendels use pure lines in his experiment?
He needed a control group. *Apex*
What make an experiment a controlled experoment?
A controlled experiment is one where two similar experiments are run in parallel, differing only in the specific intervention. A perfect controlled experiment is one where the experimenter does not know which arm is which, so is looking honestly for the outcome rather than looking for confirmation of an expected outcome. This is called blinding. In medicine, a double-blinded experiment is one where both the experimenter and the subjects are unaware of which arm they are in. Blinding is important where judgment of the outcome is subjective. An experiment on a pain drug will be highly sujective so blinding is vital; an experiment on an antibiotic may not need blinding as the results could be established by serum counts. The main function of a controlled experiment is to isolate other variables in complex systems. The most familiar kind is the standard drug trial, where a drug is compared, double-blinded, in a population which is randomised between the intervention and control arms - this is known as a randomised double-blinded controlled trial, and is required for drug approvals. The control arm may be a placebo (an inert pill), or it maybe the existing treatment. Sometimes multi-arm trials are conducted: new treatment versus current treatment and placebo. The book "Bad Science" by Ben Goldacre has an excellent overview of controlled trials ad their strengths and weaknesses.
