Statistics MCQs

Page No. 9

The lower and upper quartile of standard normal variation are respectively ?


aµ+0.6745σ and µ-0.6745σ


b -0.6745 and 0.6745


c-0.7979 and 0.7979


d-0.7979σ and 0.7979σ


View Answer -0.6745 and 0.6745

If X N(55,49) then σ ?


a7


b55


c104


d49


View Answer 7

The median of normal distribution corresponds to the value of Z equal to_________________?


a0.5


b1


cµ


d0


View Answer µ

Mean deviation of Normal Distribution is_____________?


a45σ


b34σ


c78σ


d23σ


View Answer 45σ

The area under the normal distribution curve outside the interval of z=1 and z=3.09 is_____________?


a 0.1477


b0.1597


c0.3413


d0.4990


View Answer 0.1597

The normal distribution is_________?


aPlatykurtic


bLeptokurtic


cMesoukurtic


dNone of these


View Answer Mesoukurtic

In normal distribution Q.D. ( quartile deviation)is equal to________?


aσ


b 0.7979 σ


c 0.6745 σ


dNone of these


View Answer 0.6745 σ

P95 means _____?


a The central 95% area


bThe point above above which95% area lies


c The point above below which 95% area lies


dBoth (a) and (b) but not (c)



If β1 = 0 it means the distribution is _______________?


aSymmetrical


b+ vely skewed


c-vely skewed


d Non of these


View Answer Symmetrical

The maximum of function is at_______________?


a X = σ2


b X = µ


cX = µ + σ


dX = 0


View Answer X = µ

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