When you're growing a plants and their not growing.
1) Put them in shade all day, they have good soil and I water them.
2) "I think it might be better if they got less sunlight"
3) I put one in the shade and one in the sun, keeping everything the same.
4) The one in the sun grew better.
5) Now I know to keep my plants in the sun.
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Crime scene
1) hypothesis "my keys are in the jacket pocket"
2) Test 1 - Checks in pocket- They're not there
3) Hypothesis " there on the counter"
4) Test 2 - Checks on counter - Not there
5) Hypothesis " I left them in the front door's lock"
6) Test 3 - Checks door- They're there.
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Proving the hypothesis, measuring something and causality.
These or only two examples but I hope you get the memo.