Question # 1

Second moment about mean is also called

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mean

variance

skewness

standard deviation

The point of inflection in normal distribution are _______.

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μ - σ, μ + σ

μ - σ, μ + 2σ

μ, σ

None of these

The normal distribution is --------------------distribution.

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positively skewed

negatively skewed

symmetrical

peaked

The probability density function has ------------------ value for every value of x.

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negative

positive

minimum

maximum

The maximum ordinance of the standard normal Curve is at Z = ______.

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1.96

2.33

1

0

All odd ordered moments about mean are ______ in a normal distribution.

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Zero

Unity

Positive

Negative

Normal distribution is

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unimodal

bimodal

trimodal

multimodal

The normal distribution is represented as_______

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N (μ,σ²)

N (n,p)

N (0,σ²)

None of these

In case of normal distribution maximum value of ordinate is

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μ

Zero

In a normal distribution,_____= μ + 0.64745 σ

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Q₁

Q₃

μ

σ

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β₁

β₂

β₃

S_k

In normal distribution.

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Mean > median > mode

Mean = median = mode

Mean < median < mode

None of these

For normal distribution mean always lies between.

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Median and mode

Median and Q₁

Median and Q₃

None of these

P ( | Z | > a) =

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2ø(a) - 1

ø(a)

2 ø (-a)

1-ø(a)

The normal distribution is a bell shaped_______ distribution.

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Discrete

Continuous

Symmetrical

Skewed

Normal distribution ranges from_______.

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1,2,3,............∞

-∞ to +∞

1,2,3,.........n

None of these

Total probability under the normal curve is

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1

0

-1

∞

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