Question # 1

In a normal distribution,_____= μ + 0.64745 σ

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Q₁

Q₃

μ

σ

The range of a normal distribution is

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—∞ to 1

—∞ to 0

—∞ to + ∞

0 to ∞

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

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1.96

2.33

1

0

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

μ - 2σ to=μ + 2σ contains approximately_______ area.

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75%

50%

95.45%

99.73%

For normal distribution mean always lies between.

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Median and mode

Median and Q₁

Median and Q₃

None of these

In case of normal distribution maximum value of ordinate is

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μ

Zero

The shape of the normal distribution is like

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J.

L

bell

circle

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

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negative

positive

minimum

maximum

The normal distribution is a _______.

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Positive

Negative

Discrete

Continuous

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

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positively skewed

negatively skewed

symmetrical

peaked

In case of symmetrical distribution

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μ₁ = μ₂ = μ₃ = μ₄

β₁ = β₂

P₁ < P₂

The maximum ordinate of a normal curve is at X = ________.

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μ

σ

X̅

S.D

The normal distribution is a bell shaped_______ distribution.

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Discrete

Continuous

Symmetrical

Skewed

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

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Zero

Unity

Positive

Negative

The moment coefficient of skewness is

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β₁

β₂

S_k

m₃

Normal distribution is

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unimodal

bimodal

trimodal

multimodal

P(μ-2σ < X=< μ + 2σ)=

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0.6827

0.9545

0.9973

0.9827

Second moment about mean is also called

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mean

variance

skewness

standard deviation

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