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    is the standard deviation used to measure the reliabilty or validity of data??
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    it measures both indirectly but priority is to relaibilty
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    (Original post by pondsteps)
    is the standard deviation used to measure the reliabilty or validity of data??
    Standard deviation is a measure of the reliability of data. High s.d. indicates low reliability and vice versa.

    validity is associated with variable control/variability
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    (Original post by RAZA1999)
    it measures both indirectly but priority is to relaibilty
    how does it indirectly measure validity?????
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    (Original post by pondsteps)
    how does it indirectly measure validity?????
    See
    validity refers to the methodology
    reliabilty refers to the repetition
    SDs are calculated by using averages values which require repetition of the experiment to be obtained.
    repetition reduces percentage errors due to methodology
    thats why valid results are also reliable and relaible results are valid
    i hope i make sense
 
 
 
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