Essay regarding Measures of Dispersion

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MEASURES OF DISPERSION

My spouse and i. Meaning and Types of Measures of Dispersion

Procedures of Dispersion ( Variance or Distributed )

- is a assess used to illustrate the variety of a set of info

|Measure of Dispersion |Symbol for | | |Parameter |Sample | |A. TOTAL DISPERSION | | | |Range |R |R | |Average Deviation |A. D. |A. M. | |Variance |Оґ2 |s2 | |Standard Deviation |О” |s | |Others | | | |B. RELATIVE DISPERSION | | | |Coefficient of Variation |C. V. |c. v. | |Standard Report | |

2. ABSOLUTE DISPERSION

A. RANGE

Meaning: Selection is the difference involving the highest and lowest principles of the set of data.

Solution for Selection:

• Ungrouped Data

L = maximum observation without lowest statement

R sama dengan H. Sixth is v. L. Versus.

• Arranged Data

R = highest ucl – lowest lcl

B. DIFFERENCE and REGULAR DEVIATION

That means: Variance is a mean from the squared change from the mean.

Standard Change is the great square root of variance.

Formulation for Variance and Normal deviation:

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• Ungrouped Data

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• Grouped Data

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Sort of computation for ungrouped info

Given: Dumbbells of at random selected students in pounds:

180, 150, 85, hundratrettiofem, 140, 85, 115, 120, 145, 135, 160, 99, 127

a) Computation of Range

R = L. V. D. V. = 180 – 85

L = ninety five pounds

Meaning: The distance between the heaviest and least heavy weights of students is 95 pounds.

b) Computation of Variance and regular deviation

|Xi |[pic] | |Xi2 |[pic] | | |[pic] | |180 |[pic] | |32400 |[pic] | | | | |140 |[pic] | |19600 |[pic] | | |Note: final email address details are expressed to 2 quebrado | |85 |places. | |7225 | | | | | |135 | | |18225 |...

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