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

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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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