Question # 1

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

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In case of symmetrical distribution

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μ₁ = μ₂ = μ₃ = μ₄

β₁ = β₂

P₁ < P₂

Screen output is considered as a

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softcopy

hardcopy

screen copy

print copy

Regression line x on y is

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Small sample has less than

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50 values

45 values

30 values

35 values

The normal distribution is --------------------distribution.

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positively skewed

negatively skewed

symmetrical

peaked

The additive model of the time series is:

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Y = T + S + C + I

TSCI

Y = a + bX

Y = a + bX + cX²

The degree of linear relationship between two variable is called________.

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Dependent

Association

Positive

Correlation

The shape of the normal distribution is like

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J.

L

bell

circle

If (1-α) is increased, the with of a confidence interval is:

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Decreased

Increased

Constant

Same

Types of statistical inferences are

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one

two

three

four

For a least squares linear trend Y = a + bX

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ΣY = ΣY

ΣY = 0

ΣY > ΣY

None of them

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

Non probability form of sampling is

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quota sampling

sampling with replacement

sampling without replacement

none of these

Keyboard, mouse and scanner are the ---------- devices

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input

output

logical

mini

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

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Sampling error

Standard error

Bias

Error of estimation

A specific value of an estimator computed from the sample data is called

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estimation

estimate

interval estimate

point estimate

The equation of the quadratic (parabolic) trend is

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ŷ=a+bx

ŷ=a+by

ŷ=a+bΣx+cΣx²

ŷ=a+bx+cx²

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