Understanding Experimental Design Concepts

The video tutorial covers how to approach a sample experimental design FRQ, focusing on the 2012 example. It emphasizes the importance of precise language in hypothesis formulation, understanding scoring guidelines, and identifying independent and dependent variables. The tutorial also discusses the need for multiple experimental groups and a control group, and how to determine when to reject a hypothesis based on specific experimental results.

What year was the experimental design FRQ example given?

• 2012

• 2011

• 2013

• 2010

Which parts of the question are focused on experimental design?

• Only 3b

• 3c and 3d

• Only 3a

• 3a and 3b

What specific words should be included in a hypothesis to make it precise?

• Fast or slow

• More or less

• Increasing or decreasing

• High or low

What is the minimum number of experimental groups required?

• One

• Two

• Three

• Four

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

• To increase the number of variables

• To serve as a baseline for comparison

• To ensure all groups are identical

• To test a new variable

What is the independent variable in the given experimental design?

• Number of minnows

• Amount of Product X

• Growth rate of minnows

• Death rate of minnows

How can you determine if your hypothesis is incorrect?

• If the control group shows unexpected results

• If the control group shows no change

• If the experimental group shows no change

• If the experimental group shows unexpected results

What should you identify to validate your experimental results?

• Experimental group

• Control group

• Dependent variable

• Independent variable

What is a key component of experimental design?

• Using random variables

• Decreasing sample size

• Having a control group

• Increasing sample size

What should you review to ensure understanding of experimental design?

• Independent and dependent variables

• Sample size

• Data collection methods

• Random sampling