Use the Given Covariance Matrix to Compute the Percentage of the Total

question 24

Multiple Choice

Use the given covariance matrix to compute the percentage of the total variance that is contained in the first principal
component. Round to one decimal place.
- $$\left[ \begin{array} { r r r r } 10 & 13 & 1 & 4 \\6 & 3 & 9 & 6 \\17 & 5 & 5 & 5\end{array} \right]$$

• A)
• \[S = \left[ \begin{array} { r r r r }
• 30 & - 3 & - 15 & - 12 \\
• - 3 & 18 & - 12 & - 3 \\
• - 15 & - 12 & 18 & 9 \\
• - 12 & - 3 & 9 & 2
• \end{array} \right]\]
• B)
• \[S = \left[ \begin{array} { r r r }
• - 30 & 12 & - 12 \\
• 12 & - 6 & 0 \\
• - 12 & 0 & - 36
• \end{array} \right]\]
• C)
• \[S = \left[ \begin{array} { r r r }
• 30 & - 12 & 12 \\
• - 12 & 6 & 0 \\
• 12 & 0 & 36
• \end{array} \right]\]
• D)
• \[S = \left[ \begin{array} { r r r }
• 90 & - 36 & 36 \\
• - 36 & 18 & 0 \\
• 36 & 0 & 108
• \end{array} \right]\]

Develop a deep understanding of reaction mechanisms in organic chemistry.

Apply knowledge of organic chemistry to solve problems in medicinal chemistry.

Understand the functional group transformations involved in organic synthesis.

Understand the general principles of performing organic reactions.

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Definitions:

Behavioral Therapy

A treatment approach that focuses on modifying negative behaviors through reinforcement methods.

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A therapy developed by Aaron Beck that helps people identify and change the maladaptive assumptions and ways of thinking that help cause their psychological disorders.

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A therapeutic approach that emphasizes the influence of society, culture, and family on individual mental health, focusing on how social and cultural factors contribute to psychological problems.

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