Compute the holding period returns from the prices of the stocks A , B and C below, and obtain the expected return (average) and the risk (standard deviation) of each stock. Plot a graph with the expected return on the vertical axis and risk on the horizontal axis. Is there risk return relationship in the three (3) stocks given?

Stock A	Stock B	Stock C
142.4	1205	1211.1
155.6	1177.7	1226
165.3	834.6	1263.6
164.9	853.7	1366
166.6	740.8	1424.1
161.6	748.4	1476.1
163.6	808.9	1547.6
159.9	982.6	1659.5
162.9	828	1677.6
165.3	771.4	1565.4