Two alternative expected returns are compared with help of

The correct answer is A. coefficient of variation.

The coefficient of variation is

a measure of the relative dispersion of a set of data points, scaled to the standard deviation. It is calculated by dividing the standard deviation by the mean. A low coefficient of variation indicates that the data points tend to be very close to the mean, while a high coefficient of variation indicates that the data points are spread out over a large range of values.

The coefficient of variation can be used to compare the variability of two or more sets of data. For example, if the coefficient of variation of set A is 0.5 and the coefficient of variation of set B is 1.0, then set A is less variable than set B.

The coefficient of variation is also used in finance to compare the risk of different investments. A low coefficient of variation indicates that an investment is less risky, while a high coefficient of variation indicates that an investment is more risky.

The other options are incorrect because they are not measures of relative dispersion.

• Option B, coefficient of deviation, is a measure of the absolute dispersion of a set of data points. It is calculated by taking the square root of the variance.
• Option C, coefficient of standard, is not a standard term in statistics.
• Option D, coefficient of return, is a measure of the return on an investment. It is calculated by dividing the total return by the initial investment.