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17 January, 18:00

Why is a quantitative observation more useful than a non - quantitative one? Which of the following are quantitative?

(a) The Sun rises in the east.

(b) An astronaut weighs one-sixth as much on the Moon as on earth. (c) Ice floats on water.

(d) An old-fashioned hand pump cannot draw water from a well

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  1. 17 January, 18:04
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    A quantitative observation is not necessarily more useful than a non-quantitative one. However, quantitative observations do allow one to find trends.

    (a), the sun rising is a non-quantitative observation.

    (b), knowledge of the numerical relationship between the weight on the Moon and on Earth, is a quantitative observation.

    (c), watching ice float on water does not involve a measurement; therefore, it must be a qualitative observation.

    (d) the fact that we know that the water pump won’t work for depths more than 34 feet makes it quantitative. Again, seeing numbers is a giveaway that it’s a quantitative observation. Quantitative is where you deal with numbers.
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