Observations, spreadsheets, charts, and probably more.
the answer is the scientist designs a scientific inquiry
observations
Observations
observations
observations
observations
An experiment.
Experimental design and plan.
I'm guessing that first you must during the experiment collect the data that you observed, then collect this data and organize it independent and dependent variable (The x-axis is the independent variable and the y-axis is the dependentvariable).
To make a hypothosis scientists need to know their facts and remember a hypothosis is just a guess, scientists can be wrong.
They make a controlled experiment.
Record your observations during an experiment. This will be part of the data you collect.