Over the Past Five Years, Northern Railway Stock Had Annual

question 81

Multiple Choice

Over the past five years, Northern Railway stock had annual returns of 11, 15, -5, 8.5, and 18 percent, respectively. What is the variance of these returns?

• A) .00548
• B) .00685
• C) .00790
• D) .01370
• E) .02740

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Definitions:

Cylindrical Cam

A rotating cylinder designed to convert rotary motion into linear motion of a follower by means of a contoured surface.

Reciprocating Machine Element

A component of machinery that moves back and forth or up and down, typically converting rotary motion into linear motion or vice-versa.

Rotating

Refers to an object or part that moves in a circle around an axis or point, commonly seen in machinery and mechanical devices.

Oscillating

Moving or swinging back and forth at a regular speed.