Question # 1

In a set of observation. 5,5,7,9,9,9,9,11,11,11,11,12,12 the mode is:

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9

11

Both 9 and 11

None of these

The extent of variation between two extreme observations in a data is called.

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Average

Range

Quartiles

None of these

median from the data 82,93,86,92 and 79 is.................

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82

86

92

93

A cumulative frequency table is also called.....................

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Frequency distribution

Data

Less then cumulative frequency distribution

Histogram

The measure of central tendency which is not affected by extreme values is called:

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Median

Arithmetic mean

Geometric mean

None of these

In class (30-39), lower class limit is....

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39

9

30

34.5

1+ cot² θ = __________.

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tan²θ

cosec²θ

cot²

sec²θ

During frequency distribution number of groups should be between........

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5 and 10

10 and 15

10 and 20

5 and 15

A cumulative frequency table is called.

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Frequency distribution

Data

Less then frequency distribution

None of these

The formula of area of circular sector is:

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l = rθ

r²θ

1/2r²θ

2r²θ

In a class of frequency distribution 14 - 18, the 18 is:

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Upper class limit

Lower class limit

Class interval

All of these

The positive square root of mean of the squared deviation of X,{1=1,2,3,.......n) observations from their arithmetic mean is called.

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Harmonic mean

Range

Standard deviation

Variance

If the rotation of the ray is clockwise, the angle is _____________ in measure:

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positive

negative

initial

terminal

a deviation is defined as a difference of any value of the variable from a......

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Constant

Histogram

sum

Frequency

Median from the data 2.3,2.7,2.5,3.1 and 1.9 Is.........................

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2.3

2.5

2.7

2.9

A data in the form of frequency distribution is called..............

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Grouped data

Ungrouped data

Histogram

Dispersion

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