Hey there! Sign in to join this conversationNew here? Join for free
    • Thread Starter
    Offline

    2
    ReputationRep:
    hey all

    ive got my aqa empa tommorow.
    im feeling ok but i keep getting confused with some key terms

    acurate- close to the 'true' value- how do you increase acuracy of results?
    precise- how close together the results are, so little variation between results- how do you increase precision?
    reliable- if results could be repeated and they would be the same- so to increase reliablility you would repeat results?

    im pretty sure i know all this but i overthink things
    thanks
    Offline

    2
    ReputationRep:
    (Original post by ***OpenSky***)
    hey all

    ive got my aqa empa tommorow.
    im feeling ok but i keep getting confused with some key terms

    acurate- close to the 'true' value- how do you increase acuracy of results?
    precise- how close together the results are, so little variation between results- how do you increase precision?
    reliable- if results could be repeated and they would be the same- so to increase reliablility you would repeat results?

    im pretty sure i know all this but i overthink things
    thanks
    Accuracy; ensure that all of your instruments are calibrated

    Precision; use measuring devices with greater precision eg a thermometer that measures to 2d.p. instead of 1

    Reliability; repeat results

 
 
 
  • See more of what you like on The Student Room

    You can personalise what you see on TSR. Tell us a little about yourself to get started.

  • Poll
    Would you like to hibernate through the winter months?
  • See more of what you like on The Student Room

    You can personalise what you see on TSR. Tell us a little about yourself to get started.

  • The Student Room, Get Revising and Marked by Teachers are trading names of The Student Room Group Ltd.

    Register Number: 04666380 (England and Wales), VAT No. 806 8067 22 Registered Office: International House, Queens Road, Brighton, BN1 3XE

    Quick reply
    Reputation gems: You get these gems as you gain rep from other members for making good contributions and giving helpful advice.