Question # 1

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

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Harmonic mean

Range

S.D

Variance

The measure which determines the middle most observation in a data set is called.

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Median

Mode

Mean

Rang

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

In a cumulative frequency polygon freqncies are plotted against.

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Midpoints

Upper class boundaries

Class limits

Frequency

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

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Average

Range

Quartiles

Mode

The sum of 30 observations is 1500. Its average will be:

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1500

150

15

None of these

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

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

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39

9

30

34.5

The measures that are used to determine the degree or extent of variation in a data set are called measures of...........................

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Dispersion

Central tendency

Average

Quartile

In a cumulative frequency Polygon frequencies are plotted against:

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Mid points

Upper class boundries

Class limits

Mean is affected by change in;

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Place

Scale

Rate

Mean of a variable with similar observations any constant k is:

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Negative

k itself

Zero

A cumulative frequency curve is also called:

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Histogram

Pie chart

Ogive

Frequency polygon

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

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2π

3π

4π

6π

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

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

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10th Class Mathematics Chapter 6 Basic Statistics English Medium KPK Boards Online MCQ's MCQs With Answers

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