Question # 1

The two attributes A and B are negatively associated if

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

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Positively

Negatively

Zero

Symmetrical

n = (A) + --------------------

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(B)

(α)

(β)

(A)

Degree of linear relationship between two variables is called

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regression

association

correlation

disassociation

A characteristic which varies in quality from one individual to another is called an_______.

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Variable

Attribute

Associated

Independent

(α) = (αB) + ------------------

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(Aβ)

(AB)

(αβ)

(A)

C= ------------------------------

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For an r x c contingency table, the number of degrees of freedom are equal to:

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rc

r + c

(r-1)+(c-1)

(r-1)(c-1)

Chi-square curve ranges from:

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-∞ to +∞

0 to ∞

-∞ to 0

0 to 1

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)

(AB), (Aβ), (αB), (αβ) are called

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positive class frequencies

negative class frequencies

natural class frequencies

ultimate class frequencies

The total area under the curve of chi-square distribution is_______.

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1

0.5

0 to ∞

-∞ to +∞

The shape of the chi-square distribution depends upon_________.

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Parameters

Number of cells

Degrees of freedom

Standard deviation

A characteristic which varies in quality form one individual to another is called

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variable

constant

attribute

none of these

If two attributes A and B are independent, then co-efficient of association is______.

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-1

+1

0

0.5

The value of coefficient of association lies between

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0 and + 1

-1 and + 1

-1 and 0

-0.5 and + 0.5

The process of dividing the objects into two mutually exclusive classes is called_______

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Bichotomy

Trichotomy

Dichotomy

Multichotomy

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