Statistics MCQs

Page No. 18

The frequency distribution mean > Median > Mode is called __________?


aNegatively


bSymmetrical


c+vely


dOne


View Answer +vely

The second moment about mean is _____?


aVariance


bMean


c S.D.


dMode


View Answer S.D.

suppose for 40 observation, the variance is 50. If all the observation are increased by 20, the variance of these increased observation will be_________?


a50


b70


c50/20


d50-20=30


View Answer 50

Standard deviation is always calculated from _____________?


aMean


bMedian


cMode


d G.M


View Answer Mean

Mean deviation =______ S.D?


a 2/3


b4/5


c5/6


d6/5


View Answer 4/5

The sum of the squares of deviations is the least when measured from____________?


aA.M.


bMedian


cMode


dG.M.


View Answer A.M.

If Skewed distribution the three averages mean, median and mode are ________?


aIdentical


bDifferent


cZero


dNone of these


View Answer Different

The sum of powers of deviation from mean is zero is called __________?


aMean


bLack


cNormal


dSkewed


View Answer Normal

First moment about origin is always equal to _______________?


aA.M.


bvariance


cZero


dNone of these


View Answer Zero

The value of interval x ± S include _______________?


a49.45%


b95.45%


c 68.27%


d99.73%


View Answer 68.27%

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