📈Statistics MCQs
Statistics MCQs
490 MCQs271
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
272
If the smallest observation in a data is decreased, the average which is not affected is______________?
AG.M.
BMedian
CMean
DHarmonic mean
273
The sum of square of deviation is least when measured from ____________?
AArbitrary value
BMean
CMode
DG.M.
274
The most frequent value in data is called ________________?
AMean
BMode
CMedian
DH.M.
275
__________ of the distribution which is measured relative to the distribution known as Normal?
ASkewed
BFlatness
CNormal
DMoment
276
In symmetrical distribution, the co-efficient of skewness is equal to ______________?
A-1
B+1
C0
DNone of these
277
Quartile deviation is not capable of manipulation______________?
AEasy
Bmathematically
CAbjectly
DAlgebraic
278
The measure of relative dispersion is called __________________?
AQuartile deviation
BMean dervation
CMean coefficient
DCoefficient of quartile Deviation
279
Group data formula for mode _______?
A1+ fm – f2/f1 – f2 x h
B1+ f1 – f2/f2 – fm x h
C1 + fm – f1/ (fm – f1) + (fm1 – f2) x h
D1+ fm1 – f2/f1 – fm x h
280
If any value in the data is zero, then which of the following average vanishes_________?
AA.M.
BG.M.
CH.M.
DNone of these