.


.

1The table shows the projected return of Security A.

.

S.NoPiRi(%)

.

10.225

.

20.475

.

30.2580

.

40.152

.


.

2The table shows the historical returns of security A

.


.

Year Ri(%)

.

125

.

275

.

380

.

42

.


.


.

In both the above cases calculate the Mean return and standard deviation.