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| 1. |
what is best measure of dispersion and why |
| Answer» Standard deviation is considered to be the best measure of dispersion and is thereore, the most widely used measure of dispersion.(i) It is based on all values and thus, provides information about the complete series. Because of this reason, a change in even one value affects the value of standard deviation.(ii)\tIt is independent of origin but not of scale.(iii)\tIt is useful in advance statistical calculations like comparison of variability in two data sets.(iv)\tIt can be used in testing of hypothesis.(v)\tIt is capable of further algebraic treatment. | |