Exploring Experiment Design Principles

The video tutorial explains how to design and conduct an experiment to test a new diabetes medicine. It covers the setup of control and treatment groups, the importance of random assignment, and methods to avoid bias. The tutorial also discusses analyzing results, the significance of replication, and the potential for random chance to affect outcomes.

What is the primary purpose of the new diabetes medication discussed in the video?

• To increase blood sugar levels

• To reduce hemoglobin A1c levels

• To cure diabetes completely

• To increase insulin production

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CCSS.HSS.IC.B.3

What is the explanatory variable in the experiment?

• Hemoglobin A1c levels

• The age of the participants

• Blood sugar levels

• Whether or not the pill is taken

What is the response variable in the experiment?

• The dietary habits of the participants

• The age of the participants

• The blood sugar levels

• The hemoglobin A1c levels

Why is a placebo used in the control group?

• To ensure all participants receive some form of treatment

• To ensure participants do not know if they are receiving the actual medication

• To reduce the cost of the experiment

• To increase the effectiveness of the medication

What is a double-blind experiment?

• An experiment where neither the participants nor the administrators know which group is receiving the treatment

• An experiment where only the participants do not know which group they are in

• An experiment where only the administrators know which group is receiving the treatment

• An experiment where the results are analyzed by a third party

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CCSS.HSS.IC.B.3

Why is random assignment important in an experiment?

• To ensure the experiment is completed quickly

• To make the experiment more complex

• To avoid bias and ensure balanced groups

• To ensure all participants receive the treatment

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CCSS.HSS.IC.B.3

What is a block design in the context of random assignment?

• A method to randomly assign participants to groups without any criteria

• A method to ensure equal numbers of men and women in each group

• A method to assign participants based on their dietary habits

• A method to ensure participants are assigned based on their age

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CCSS.HSS.IC.B.3

What should be done if there is no difference in A1c levels between the control and treatment groups?

• Repeat the experiment with a larger sample size

• Conclude that the pill is effective

• Change the dosage of the pill

• Conclude that the pill is ineffective

Why is replication important in scientific experiments?

• To increase the cost of the experiment

• To confirm the results and avoid random errors

• To ensure all participants receive the treatment

• To ensure the experiment is completed quickly

What is a false positive in the context of experimental results?

• When the experiment is repeated multiple times

• When the results show no effect but there is one

• When the participants know which group they are in

• When the results show an effect but there is none