Question # 1

In a systematic sampling every ------------ unit is selected

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1^st

last

xth

normal

Which hypothesis is always in an inequality form?

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Simple hypothesis

Alternative hypothesis

Null hypothesis

Composite hypothesis

The mean deviation (M.D) of a normal distribution is ________.

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4/5 σ

5/4 σ

2/3 σ

None of these

A set of points in a rectangular coordinate system, where each point represents an observed pair of values is called

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least square regression

scatter diagram

pie graph

regression coefficient

Methods of semi-averages gives an

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accurate result

objective result

authentic result

none of these

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

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Zero

Unity

Positive

Negative

Degree of linear relationship between two variables is called

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regression

association

correlation

disassociation

1MB equals

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1048576 bytes

1024 bytes

2048 bytes

2380 bytes

The shape of the normal distribution is like

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J.

L

bell

circle

A ---------------- error is made by accepting H_o if H₁ is actually true

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type - I

type - II

type - III

type - IV

The shape of the chi-square distribution depends upon_________.

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Parameters

Number of cells

Degrees of freedom

Standard deviation

The ___________ allow you to type information into the computer.

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Mouse

Scanner

Printer

Keyboard

If the observations are paired and the number of pairs is n, then the number of degree of freedom is equal to

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n

n - 1

2n

2n - 1

Which one is a rough and crude method for measuring secular trend ?

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free hand curve method

semi average method

moving averages method

least square method

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 following statistic are unbiased estimators:

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The Sample mean

S² = Σ(X - X)²/n-1

The sample proportion

All the above

Estimate is the observed value of an:

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Unbiased estimator

Estimation

Estimator

Interval estimation

The alternative hypothesis is also called:

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Null hypothesis

Statistical hypothesis

Research hypothesis

Simple hypothesis

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