Uncertainty Flashcards

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1
Q

what factors effect certainty

A
  1. instrument resolution
  2. manufacturers tolerance of the instrument
  3. human judgement
  4. how many repeats
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2
Q

readings

A

only require one human judgement

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3
Q

example of reading

A

Thermometer

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4
Q

measurements

A

require two human judgements

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5
Q

example of measurements

A

ruler

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6
Q

what is the uncertainty of an instrument ?

A

+ or - half the resolution of the instrument

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7
Q

how can you reduce uncertainty ?

A

taking repeat measurements and calculating a mean

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