Question # 1

The difference of upper and lower limits of confidence interval measures the

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level of significance

level of confidence

interval

precision

The most common type of computer memory is called:

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ALU

ENIAC

RAM

ROM

A relationship where the flow of the data points is best represented by a curve is called_______.

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Linear positive

Linear negative

Linear relationship

Nonlinear relatiobship

The unsystematic sequence which follows irregular pattern of variations is called:

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Noise

Signal

Linear

Non-linear

The two attributes A and B are ________associated, If (AB) < (A)(B)/n.

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Positively

Negatively

Zero

Symmetrical

If sampling is done without replacement then no

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Nⁿ

^NC_n

^Np_"

N x N

A part of the population is called

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parameter

statistic

sample

both b and c

The descriptive measure on the sample observation is called ------------------

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parameter

statistic

error

true value

100(1-α)% confidence interval for population proportion of success,&=nbsp;π is

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P (L <μ < U) = 1 - α

P (L <σ < U) = 1 - α

P (L <π< U) = 1 - α

P (L <P&=nbsp;< U) = 1 - α

If r = -1, then there is

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negative correlation

perfect negative correlation

no correlation

average correlation

Is sampling without replacement, an element can be chosen:

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Less than once

More than once

Only once

Difficult to tell

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

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75%

50%

95.45%

99.73%

The moment coefficient of skewness is

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β₁

β₂

S_k

m₃

Large sample contains more than

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5 values

10 values

20 values

30 values

The critical region of=χ2distribution is

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χ2 <χ2v; 1-α

χ2 <χ2v;1-α

χ2 <χ2 v;1-α/2

χ2 <χ2v;1-α/2

A sample is usually selected by_______.

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With

Without

Finite

Infinite

Statistic is an estimator and its calculated value is called:

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Biased estimate

Estimation

Interval estimate

Estimate

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6Σd₁

5Σd¹

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