Which of the following are probable sources of error in a scientific experiment? check all of the boxes
that apply
a student uses different thermometers throughout a two-week experiment.
data is analyzed carefully and double-checked
the experimental design does not test the proposed hypothesis.
leaves were collected in a random pattern from all parts of a tree.
a control group of plants gets more light than the experimental group.
a scale was recalibrated before each day's measurement
done
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