Macro Corporation Has Had the Following Returns for the Past $\left( r _ { m } \right)$

question 5

Multiple Choice

Macro Corporation has had the following returns for the past three years: -10 percent, 10 percent, and 30 percent.Use the following formulas to calculate the standard deviation of the returns: Variance = expected value of $\left( r _ { m } \right)$ $\left( \tilde { r } _ { m } - r _ { m } \right) ^ { 2 }$ Standard deviation of . $\tilde { r } _ { m } = \sqrt { \text { variance } \left( r _ { m } \right) }$

• A)10.00 percent
• B)16.33 percent
• C)18.21 percent
• D)30.00 percent

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Definitions:

Desalination

The process of removing salt and other minerals from seawater to produce fresh water suitable for human consumption or irrigation.

Filtration

A method for separating solids from liquids or gases using a filter medium that allows only the fluid to pass through while retaining the solid particles.

Osmosis

The movement of water through a semipermeable membrane from an area of low solute concentration to an area of high solute concentration.

Distillation

A process of purifying liquids through heating and cooling, separating components based on differences in boiling points.