Question # 1

If we reject Ho when Ho is actually true then it is

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type - I error

type - II error

type - III error

type - IV error

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biased

unbiased

positively biased

none of these

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

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input

output

logical

mini

In moving average method, we cannot find the trend values of some:

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Middle periods

End periods

Starting periods

Between extreme periods

The most common measurement unit for describing a computer's memory is

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bits

mega bytes

bytes

kilobytes

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

1MB equals

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1048576 bytes

1024 bytes

2048 bytes

2380 bytes

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

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Opposite

Estimated

Estimates

Random

Keyboard is commonly used_______device.

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Output

Input

Primary

Secondary

r_xy -------------- r_yx

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=

<

>

≠

Super computers can process million of instructions:

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Per second

Per microsecond

Per minute

Per hour

If (AB) = (A)(B)/n, the two attributes. A and B are _________.

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Independent

Dependent

Correlated

Quantitative

One of the great advantages of sampling is

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waste time

save time

use time

need time

Screen output is considered as a _________.

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Hardcopy

Softcopy

Input

Software

P(type I error) is equal to:

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1 - α

1 - β

α

β

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

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 secular trend is measured by the method of semi-averages when:

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Time series contains yearly value

Trend is linear

Time series contains odd number of values

None of them

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