Question # 1

A numerical characteristic calculated from sample is called:

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Sample unit

Sample design

Statistic

Parameter

Machine language is in the form of

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1 and 2

0 and 1

1 and 3

0 and 3

In the measurement of secular trend the moving averages

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give the trend in a straight line

measure the seasonal variations

smoothes out a time series

measure irregular fluctuations

The trend values in freehand curve method are obtained by:

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Equation of straight line

Second degree parabola

Signal

Graph

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independent

positively associated

negatively associated

correlated

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

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logical

inner

ALU

other

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 most common type of computer memory is called

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ROM

REM

RAM

RIM

The _______ regression line always passes through (X̅, y̅).

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Opposite

Estimated

Estimates

Random

A statement about the value of a population parameter is called:

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Null hypothesis

Alternative hypothesis

Simple hypothesis

Composite hypothesis

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

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y-intercept

x-intercept

slope

none of these

The error which arises due to faulty sampling frames and processing of data is called

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random error

sampling error

non-sampling error

systematic error

CD-ROM is a type of _________.

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Optical disk

Hard disk

Soft disk

Compact disk

All odd order moments about mean are

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unique

zero

different

one

An example in a two-sided, alternative hypothesis is:

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H₁ :u < 0

H₁ : u > 0

H₁ L u > 0

H₁ : u ≠ 0

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

In a normal distribution β₁ = 0 and β₂ = __________.

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2

4

3

5

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