Loading
Progresso di Studio
Across all your exams
Taught in English
Questo esame si sostiene in inglese: le lezioni e le domande sono in inglese. L'interfaccia resta in italiano.
Drag to pan · ⌘/Ctrl + scroll or pinch to zoom · tap a node for detail · +/− to expand a branch
Part 1 of 2
Every experiment starts with a question about cause and effect. The independent variable is what researchers deliberately change. The dependent variable is what they measure afterward.
A common mistake is confusing the measurement with the cause. Ask yourself: what did the researchers manipulate, and what result did they observe?
Worked example
A university tests whether sleep improves memory. Students sleep 8 hours or 5 hours. The independent variable is sleep duration. The dependent variable is memory score measured after the test.
1.The dependent variable is the outcome measured by researchers.
2.The independent variable is always the result being measured.
3.A control group helps compare results against a normal condition.
Study assistant
Paid students only — a preview
Why is this the correct answer?
Eliminate any option that contradicts something stated directly in the lesson, then check which one actually follows from the rule you just learned. Tell me which option confused you and I'll point to the exact line.
Exam strategy
If you can explain why the wrong answers are wrong, you know the topic. Remembering the right one only gets you halfway.
Unlock AI tutoring for this exam →