Question # 1

Sampling in which a sampling unit can be selected more than once is called

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simple sampling

sampling with replacement

sampling without replacement

none of these

Non probability form of sampling is

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quota sampling

sampling with replacement

sampling without replacement

none of these

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

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1.96

2.33

1

0

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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y-intercept

x-intercept

slope

none of these

Random sampling provide reliable ______.

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Samples

Units

Estimates

Frame

If (AB) = (A)(B)/n, the two attributes. A and B are _________.

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Independent

Dependent

Correlated

Quantitative

The graph of time series is called:

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Histogram

Historigram

Straight line

Ogive

The distance between an estimate and the estimated parameter is called:

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Sampling error

Standard error

Bias

Error of estimation

The probability distribution of proportions is called

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proportional distribution

population distribution

sample distribution

sampling distribution

For a least squares linear trend Y = a + bX

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ΣY = ΣY

ΣY = 0

ΣY > ΣY

None of them

A characteristic which varies in quantity from one individual to another is called a________.

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Association

Correlation

Variable

Attribute

The graph of a time series is called

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histogram

polygon

straight line

historigram

The rise and fall of a time series periods longer than one- year is called.

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Secular trend

Seasonal variation

Cyclical variation

Irregular variation

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

A business cycle has

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one phase

two phases

three phases

four phases

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independent

positively associated

negatively associated

correlated

r_xy -------------- r_yx

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=

<

>

≠

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