Контролируемые эксперименты

What is a hypothesis in the scientific method?

• Confirmed explanation

• Best guess

• Exact answer

• Random guess

What is an independent variable in a controlled experiment?

• Variable that has no value in the experiment

• Variable that changes depending on the experiment

• Variable that the experimenter applies or chooses independently

• Variable that depends on the result

What does a control group represent in an experiment?

• Group receiving treatment

• Group not participating in the experiment

• Group not receiving treatment

• Group receiving double treatment

What is a dependent variable in a controlled experiment?

• Variable that depends on the independent variable

• Variable that has no value in the experiment

• Variable that does not change in the experiment

• Variable that is not dependent on the outcome

Why is a control group needed in a controlled experiment?

• For increasing the complexity of the experiment

• For comparing the results with the experimental group

• For excluding all variables

• For increasing the number of participants

What does the experimental group represent in a controlled experiment?

• Group that does not participate in the experiment

• Group that does not receive treatment

• Group that receives treatment

• Group that receives double treatment

What is variability in biological experiments?

• Insufficient number of participants

• Differences in the material used for the experiment

• Random errors in the experiment

• Absence of differences in the results

What factors can lead to variability in biological experiments?

• Absence of differences in the material

• Constant results

• Random errors

• Small sample size

What do the data represent in the experiment?

• Results of other experiments

• Random errors

• Observations made during the experiment

• Assumptions of the experimenter

What statistical tests are used in biological experiments?

• Tests for differences in results

• Tests for detecting random errors

• Tests for differences in material

• Tests for detecting dependencies