You've now gathered some data for your pendulum. Your homework:
Create a graph of the data - something that pictorially represents any relationship between variables (if indeed there is any). Linear? Exponential? Nothing? Discuss. If you don't have enough data to create a decent graph, discuss trends (if any) that you see.
If you see a mathematical relationship, what does it appear to be? Can you imagine an equation type that might be happening here?
Discuss - what can be concluded so far?
Resist the urge to look up answers. Base your answers on your data.
Think about these things:
How much data is enough?
What does it take to convince someone that there is a relationship present?
What is causation versus correlation?
Anything else worth reporting?
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