the standard deviation of 30 observations is √6 if each observation is multiplied by 3 find the standard deviation and variance of resulting observations
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Answer:
it remains same
Step-by-step explanation:
as the formula is attached
the mui=arithmetic mean
as 3 is multiplied to all values the am also get multiple by same value
so in the over all (x-mui) remains same
N is also constant so the value never chages
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