24. A performance analyst determines that an asset-weighted composite return for one year is 2.59 percent and the mean return of the portfolios in the composite is 2.57 percent. She calculates the following dispersion measures for the portfolios that were in the composite for the full year:

High 3.65%

Low 1.92%

High/low range 1.73%

Interquartile range 0.82%

Equal-weighted standard deviation 0.55%

Explain what these measures mean and evaluate their relative advantages and disadvantages.