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Deals with discriptions
data can be observed but not measured
qualitiy |
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deals with numbers
data can be measured
- Length, height, area, volume, weight, speed, time, temperature, humidity, sound levels, cost, members, ages, etc.
- Quantitative → Quantity
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| is how close a measured value is to the actual (true) value. |
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| is how close the measured values are to each other. |
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recognizing and noting some FACT to gather information about the world
- You make observations using your five senses
- Observations must be specific and accurate, not relative, so that it means the same to everyone
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a possible explanation or guess about an observation
- Example: you leave the movie theater and see the ground is wet so you infer that it rained.
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| is a reasonable guess based on what you know or observe. Hypotheses (plural of hypothesis) are proven and disproven all of the time. |
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| A scientific theory consists of one or more hypotheses that have been supported with repeated testing. Theories are one of the pinnacles of science and are widely accepted in the scientific community as being true. To remain a theory, it must never be shown to be wrong; if it is, the theory is disproven (this also happens). Theories can also evolve. This means the old theory wasn’t wrong, but it wasn’t complete either. |
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| Many times laws are expressed in a single expression. Laws cannot ever be shown to be wrong (that is why there are many theories and few laws). Laws are accepted as being universal and are the cornerstones of science. If a law were ever to be shown false, then any science built on that law would also be wrong; then the domino effect would have a new (and devastating) meaning. |
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| the procedure to test a hypothesis |
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