Question # 1

The observation that divide a data set into four equal part, are called.

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Decites

Quartiles

Percentiles

Mode

The standard deviation is 6 then its variance is...........

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√6

36

3

6

The extent of variation between two extreme observations of a data set is measured by.......................

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Average

Range

Quartiles

Mode

A data in the form of frequency distribution is called.

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Grouped data

Ungroup data

Same

None of these

A histogram is a set of adjacent:

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Squares

Rectangles

Circles

A value best representing a set of data is called:

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Average

Variance

Standard deriviation

None of these

Mean is affected by change in ..........

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Place

Scale

Rate

None of these

In a cumulative frequency polygon freqncies are plotted against.

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Midpoints

Upper class boundaries

Class limits

Frequency

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

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39

9

30

34.5

Sum of the deviations of the variable x from its mean is alwyas....

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Zero

One

Same

Negative

The nth root of product of 'n' number of values is called:

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Arithematic mean

Geometric mean

Harmonic mean

Standard deriviation

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

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positive

negative

initial

terminal

Mean of a variable with similar observations say constant k is............

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Negative

K- itself

zero

one

The spread of observations in a data set is called.

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Average

Dispersion

Central tendency

Mean

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

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Harmonic mean

Range

Standard deviation

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

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Mathematics 10th Class English Medium Unit 6 Online Test MCQs With Answers

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