Dispersion measures

What is meant by Dispersion Measures in Statistics?

• In statistics, dispersion Measures refer to positive real numbers that help to measure the variability of data about a central point.

• In statistics, dispersion measures refer to numbers that help to measure the variability of data about a medium point

• Measures of dispersion refer to positive real numbers.

What is the coefficient of variation?

• It is a statistical measure that provides little information in a set of data

• It is a statistical measure that provides information regarding the relative dispersion of a set of data. It is expressed as the ratio of the standard deviation to the mean.

• Coefficient of variation is a statistical measure that provides information regarding the relative dispersion of a set of data. It is a statistical measure that provides information on a data set and only expresses the mean of a population

What are the uses of measures of dispersion?

• Measures of central tendency are used to calculate “normal” values of a dataset, measures of dispersion are crucial in explaining the range of the data, or its variation around a mean value.

• Measures of central tendency are used to calculate “normal” values just of a sample.

• None of the answers are correct

The next Formula belongs to which measure of the dispersion:

• Variance

• Coefficient of variation

• Standard deviation

What are the two types of variance?

• Population Variance

• Sample Variance

• Coefficient of variance

• Standard deviation

Which of the following is not a measure of dispersion?

• Standard Deviation

• Variance

• Mode

• Coefficient of variation

What is the main point of the Standard desviation?

• The standard deviation provides information about the average dispersion of a variable.

• Measures of central tendency are used to calculate “normal” values just of a sample.

• Measures of dispersion refer to positive real numbers.

What is the meaning of " X̅” in the coefficient of variation formula?

• Standard desviation

• Coefficient of variation

• Mean