Dispersion | Measures Of Dispersion And Its Types | Muhammad Usman | Statistics In Urdu Hindi

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Question: Define dispersion.
Answer: The scatterness of given values about their center is called dispersion.

Question: Define measures of dispersion.
Answer: Any descriptive measure that indicates the amount of variation of given values about their center is called measure of dispersion.

Question: Define absolute measure of dispersion.
Answer: Any descriptive measure that indicates the amount of variation of given values about their center in the same unit or in the square of given unit is called absolute measure of dispersion.

Question: Define relative measure of dispersion.
Answer: Any unit free measure that indicates the amount of variation of given values about their center is called relative measure of dispersion.

Question: Define range.
Answer: The difference between largest and smallest value of given data set is called its range.

Question: Define quartile deviation.
Answer: It is half of the difference between upper and lower Quartiles of given data.

Question: Define mean deviation.
Answer: The mean of absolute deviation of given values from their mean, Median or mode is called mean deviation.

Question: Define variance.
Answer: The mean of squared deviations of given values from their mean is called variance.

Question: Define standard deviation.
Answer: The positive square root of mean of squared deviation of given values from their mean is called standard deviation.

Question: What is the relationship between variance and standard deviation.
Answer: Standard deviation is the positive square root of variance.
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