Question # 1

In the given set of data 5,5,5,5,5,5,5 the standard deriation is:

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5

0

7

None of these

Geometric mean of 2,4,8 is......................

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2

4

8

3

The radiance measure of an angle that forms a complete circle is:

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2π

3π

4π

6π

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

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82

86

92

93

A frequency polygon is a many sided:

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Closed figure

Rectangle

Square

The n^th positive root of the product of the x₁,x₂,x₃..................x_n observations is called:

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Mode

Mean

Geometric mean

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

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Average

Range

Quartiles

None of these

The average pocket money of 30 students is Rs.20/- , The total amount in the class is:

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Rs.20/-

Rs.30/-

Rs.300/-

Rs.600/-

Standard deviation is denoted by

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x

S

S²

X²

The mean of the squared deviations of x1,(i = 1,2.........,n) observations from their arithmetic mean is called.....................

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Variance

Standard deviation

Range

Mode

A cumulative frequency table is called.

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Frequency distribution

Data

Less then frequency distribution

None of these

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

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Frequency distribution

Data

Less then cumulative frequency distribution

Histogram

The most frequently occurring observation in a data set is called.

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Mode

Median

Harmonic mean

Mean

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

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39

9

30

34.5

The mean of the squared deviations of x_i (i = 1, 2, -----------------,n) observations form their arithmetic mean is called:

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Variance

Standard deviation

Range

Formula l=rθ is true only when θ is in:

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degree

radian

revolution

minute

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