Summative 6 Term 2

Which of the following is a key consideration when designing experiments to establish causal relationships?

• Randomization

• Sample Size

• Control Group

• All of the above.

Tags

CCSS.HSS.IC.B.5

In experimental design, minimizing _______ is crucial to establish valid causal relationships.

• A) Bias

• B) Variability

• C) Both A and B

• D) None of the above

Tags

CCSS.HSS.IC.B.5

Use data from a randomized experiment to compare two treatments. Use _______ to decide if differences between parameters are significant.

• A) Simulations

• B) Surveys

• C) Observations

• D) Randomization

Tags

CCSS.HSS.IC.B.5

Which of the following methods can be used to randomly assign treatments in an experiment?

• Using slips of paper

• Using a computer program

• Both A and B

• None of the above.

Tags

CCSS.HSS.IC.B.3

CCSS.HSS.IC.B.5

The purpose of random assignment in an experiment is to ______.

• Increase variability

• Reduce bias

• Ensure equal sample sizes

• None of the above.

Tags

CCSS.HSS.IC.B.3

Fill in the blank: If treatments are given to groups that differ greatly when the experiment begins, _______ is likely.

• success

• confounding

• accuracy

• consistency

Tags

CCSS.HSS.IC.B.5

What is one reason why allowing students to choose their group in an experiment about caffeine tolerance might affect the results?

• It ensures random assignment

• It introduces additional variables

• It eliminates bias

• It guarantees equal group sizes.

Tags

CCSS.HSS.IC.B.5

In an experiment, _______ means that treatments are assigned to experimental units using a chance process.

• random selection

• random assignment

• systematic assignment

• fixed assignment

Tags

CCSS.HSS.IC.B.5

What is the purpose of a control group in an experiment?

• 1. A control group is used to create groups that are roughly equivalent at the beginning of the

     experiment.

• 1. A control group is used so the subjects don’t know which treatment group they are in.

• 1. A control group is used because some subjects in an experiment will respond favorably to any treatment, even an inactive treatment.

• 1. A control group is used to provide a baseline for comparing the effects of other treatments

Tags

CCSS.HSS.IC.B.5

What is the primary purpose of random assignment in an experiment?

• To ensure a diverse sample

• To eliminate bias

• To increase sample size

• To reduce costs

Tags

CCSS.HSS.IC.B.3