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How do we calculate variance

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Q: Why do you measure dispersion?
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What is difference between absolute measure of dispersion and relative measures of dispersion?

The Absolute Measure of dispersion is basically the measure of variation from the mean such as standard deviation. On the other hand the relative measure of dispersion is basically the position of a certain variable with reference to or as compared with the other variables. Such as the percentiles or the z-score.


Is range a measure of central tendency?

no it is a measure of dispersion.


What is measure of relative dispersion?

UPF


Which is not a measure of dispersion range or variance?

Variance


What is dispersion method?

It is the measure of central tendency.


Why standard deviation is best measure of dispersion?

standard deviation is best measure of dispersion because all the data distributions are nearer to the normal distribution.


What measure of dispersion is used with bimodal distribution?

Central tendency is used with bidmodal distribution. This measure if dispersion is similar to the median of a set of data.?æ


What are the characteristics of a good measure of dispersion?

A good measure of dispersion is one such that the a goodness-of-fit test shows that the observed values agree well with the expected values.


What are the units of dispersion?

The units of dispersion are dependent on the units of the data being measured. Common measures of dispersion include variance and standard deviation, which have square units and the same units as the data being measured, respectively. Another measure, such as the coefficient of variation, is a unitless measure of dispersion relative to the mean.


What are measures of dispersion in healthcare?

It's a statistical tool used in psychology. A simple way of calculating the measure of dispersion is to calculate the range. The range is the difference between the smallest and largest value in a set of scores. This is a fairly crude measure of dispersion as any one high or low scale can distort the data. A more sophisticated measure of dispersion is the standard deviation which tells you how much on average scores differ from the mean.


Why measure of central tendency and measure of dispersion are complementary to each other?

for answer study the handouts of STA 301 of vu.


The measure of dispersion most affected by one extreme value is the?

coefficient of variation