Statistics MCQs

Page No. 9

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


aµ+0.6745σ and µ-0.6745σ

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b -0.6745 and 0.6745

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c-0.7979 and 0.7979

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d-0.7979σ and 0.7979σ

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View Answer -0.6745 and 0.6745

If X N(55,49) then σ ?


a7

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b55

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c104

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d49

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View Answer 7

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


a0.5

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b1

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cµ

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d0

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View Answer µ

Mean deviation of Normal Distribution is_____________?


a45σ

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b34σ

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c78σ

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d23σ

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View Answer 45σ

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


a 0.1477

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b0.1597

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c0.3413

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d0.4990

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View Answer 0.1597

The normal distribution is_________?


aPlatykurtic

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bLeptokurtic

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cMesoukurtic

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dNone of these

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View Answer Mesoukurtic

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


aσ

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b 0.7979 σ

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c 0.6745 σ

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dNone of these

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View Answer 0.6745 σ

P95 means _____?


a The central 95% area

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bThe point above above which95% area lies

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c The point above below which 95% area lies

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

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If β1 = 0 it means the distribution is _______________?


aSymmetrical

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b+ vely skewed

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c-vely skewed

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d Non of these

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View Answer Symmetrical

The maximum of function is at_______________?


a X = σ2

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b X = µ

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cX = µ + σ

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dX = 0

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View Answer X = µ

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