Info

Supertech

Hyperdrive

Variance (o2)

.2675/3 = .0892

.0529/3 = .0176

Standard deviation (o)

^.0892 = .2987

^.0176 = .1327

For practice, verify that you get the same answer as we do for Hyperdrive. Notice that the standard deviation for Supertech, 29.87 percent, is a little more than twice Hyperdrive's 13.27 percent; Supertech is thus the more volatile investment.

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