What is the primary goal of experimental design?

• To eliminate all variables

• To create new variables

• To investigate relationships between variables

• To explore random variables

Which of the following is a key feature of experimental design?

• Manipulating the dependent variable

• Keeping all variables constant

• Using independent and dependent variables

• Avoiding any form of control

How does experimental design help in establishing cause and effect relationships?

• By observing natural phenomena

• By controlling variables and manipulating one factor at a time

• By avoiding any form of manipulation

• By using qualitative data

What is a limitation of experimental design?

• It is always applicable to real-world situations

• It does not require careful planning

• It is free from ethical concerns

• It can be time-consuming and expensive

What is an alternative to experimental design when manipulation is impractical?

• Experimental research

• Theoretical research

• Quantitative research

• Observational research