Question # 1

Hypothesis that does not completely specify the underlying population distribution is called

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simple hypothesis

dual hypothesis

composite hypothesis

common hypothesis

A quantitative statement about a population is called:

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Research hypothesis

Composite hypothesis

Simple hypothesis

Statistical hypothesis

Increase the number of patients in the hospital due to heel stock is:

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Seasonal trend

Secular trend

Cyclical movements

Irregular variation

Which output is permanent ?

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hard copy

real copy

soft copy

none of these

The straight line is fitted to a time series when the movements in the time series are

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linear

quadratic

cubic

constant

A range of values used to estimate an unknown population parameter is

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a point estimator

An interval estimator

an unbiased estimator

A biased estimator

ŷ=a+bx, this line will be called least squares line if it makes=Σ(y-a-bx)2

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maximum

constant

minimum

variable

The normal distribution is a bell shaped_______ distribution.

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Discrete

Continuous

Symmetrical

Skewed

The Quartile deviation (Q.D) of a normal distribution is_______.

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4/5 σ

5/4 σ

2/3 σ

None of these

For a least squares linear trend=ŷ= a + b x,

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Σy <Σŷ

Σŷ = 0

Σy =Σŷ

none of these

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b_yx

b_xy

S_p

The method of least square gives too much weight to extremely large deviations from the

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population

parameter

sample

trend

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37

132

32

cannot be calculated

If two attributes A and B have perfect positive association value of the coefficient of association is equal to _______.

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+1

-1

0

(r-1)(c-1)

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

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positively skewed

negatively skewed

symmetrical

peaked

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best estimators

biased estimators

unbiased estimators

normal estimators

Screen output is considered as a

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softcopy

hardcopy

screen copy

print copy

Arithmetic operations are carried out by ---------------- unit

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logical

inner

ALU

other

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