Exhibit 81
USE THE INFORMATION BELOW FOR THE FOLLOWING PROBLEM(S)

question 52

Multiple Choice

Exhibit 8.1
USE THE INFORMATION BELOW FOR THE FOLLOWING PROBLEM(S) $$\begin{array}{l}\quad\quad\quad\quad\quad\quad\quad\quad\text { Rates of Return }\\\begin{array} { c c c } \text { Year } & \text { RA Computer } & \text { Market Index } \\\hline 1 & 13 & 17 \\2 & 9 & 15 \\3 & - 11 & 6 \\4 & 10 & 8 \\5 & 11 & 10 \\6 & 6 & 12\end{array}\end{array}$$
-Refer to Exhibit 8.1. Compute the correlation coefficient between RA Computer and the Market Index.

• A)-0.32
• B)0.78
• C)0.66
• D)0.58
• E)0.32

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Definitions:

Valid

Refers to the extent to which a concept, conclusion, or measurement is well-founded and likely corresponds accurately to the real world.

Aching Muscles

A common physical symptom that involves soreness or discomfort in the muscles, often resulting from physical exertion or stress.

Occasional Dizziness

Experiencing a transient sensation of unsteadiness or a feeling of light-headedness at irregular intervals.

Ideal System

A theoretical or conceptual model representing the most desirable or perfect attributes of a system or method.