The probability=40,20,20,10,10

Reture= -80,-65, -60, -25, 1000

I have worked out the problem (a) 40.5 and variance of 1011.8 but cant fiquerd out the stantard deviation % please help

The table here,

LOADING...

, shows the one-year return distribution of Startup Inc. Calculate the:

a. Expected return.

b. The standard deviation of the return.

a. Expected return:

The expected return is

nothing %.

(Round to one decimal place.)

b. The standard deviation of the return.

The standard deviation is

nothing %.

(Round to one decimal place