Variables in Research Quiz

Which of the following is an example of a variable?

• A pencil

• Something that can change or be observed

• A constant value

• A conclusion

What do we call the variable that is being changed or controlled in an experiment?

• Dependent variable

• Moderating variable

• Independent variable

• Extraneous variable

Which variable is the outcome or the result that researchers observe?

• Control variable

• Independent variable

• Dependent variable

• Manipulated variable

Which type of variable is meant to be excluded because it can interfere with results?

• Dependent

• Independent

• Moderating

• Extraneous

A nominal variable is best described as:

• Having a true zero point

• A category with a natural order

• A category without any order

• A numerical variable with ranks

What is the main role of a mediating variable in research?

• It blocks the relationship between variables

• It explains the connection between independent and dependent variables

• It has no effect at all

• It increases the experiment's complexity

Why is a moderating variable compared to a volume knob?

• Because it stops the relationship

• Because it explains how things are connected

• Because it changes how strong or weak the effect is

• Because it connects two unrelated things

Which example best shows a mediating variable?

• You eat vegetables → You get taller

• You sleep → You feel rested → You do well in school

• You drink water → You stay hydrated

• You take vitamins → You become healthier

What makes a ratio variable different from an interval variable?

• Ratio has categories

• Ratio has a true zero point

• Interval has more levels

• Interval is more accurate

Which variable changes how effective an independent variable is?

• Mediating

• Dependent

• Moderating

• Extraneous