Question # 1

The most commonly used mathematical method for measuring trend is

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Moving average method

Semi-average method

Method of least squares

Free- hand curve method

Var (2x + 3) is:

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5 var (x)

4 Var (x)

4 Var (x) +3

4 Var (x) +9

The index numbers calculated by considering the relative importance of variables are called:

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Un-weighted

Weighted

Simple

None

In Mesokurtic distribustion

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m₄ < 3s⁴

m₄ = 3s⁴

m₄ ¹ 3s⁴

m₄ > 3s⁴

If y = 5x + 10, then mean deviation of y is

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5 mean deviation (x)

25 mean deviation (x)

5 mean deviation (x) + 10

None of them

Variance of b,b,b,b is:

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b

4b

Zero

None of these

If the two variables are uncorrelated then the value of "r" is

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-1

0

F1

Fractional

If R_xy = - 0.84 then r_xy is

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-0.84

0.84

0.42

None of these

In constructing a Histogram if the class interval size of one class is double than others then freq of that class should be:

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Doubled

Half

Quarter

One

Bias is

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Cumulative

Decumulative

Decreasing

None of these

If the null hypothesis is true the probability error is identified by what name

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b

1- b

a

1- a

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