Answer:
Qualitative data is based on the quality of something an example can be the quality of a camera.
Quantitative data is based on quantity (numbers) an example can be the number of students at a football game
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Explanation:
A scientific theory may be revised overtime because it goes to the loop of science which what's the scientific theory to test several times each time a different product may be shown or every now and then a different product may be shown so therefore over time as it goes through the loop of science a scientific theory may change or be revised
