Find 3A - 2B A) $\left[ \begin{array} { c c c } - 5 & 5 & - 8 \\1 & - 8 & 16 \\- 5 & 34 & - 8 \\- 10 & 16 & - 10 \\- 6 & - 7 & 8\end{array} \right]$

question 159

Multiple Choice

Find 3A - 2B. $$A = \left[ \begin{array} { c c c } - 3 & 5 & 0 \\3 & - 4 & 2 \\5 & 6 & - 4 \\0 & 8 & - 6 \\- 2 & - 1 & 0\end{array} \right] , B = \left[ \begin{array} { c c c } - 2 & 5 & 4 \\4 & - 2 & - 5 \\10 & - 8 & - 2 \\5 & 4 & - 4 \\0 & 2 & - 4\end{array} \right]$$

• A) \(\left[ \begin{array} { c c c }
• - 5 & 5 & - 8 \\
• 1 & - 8 & 16 \\
• - 5 & 34 & - 8 \\
• - 10 & 16 & - 10 \\
• - 6 & - 7 & 8
• \end{array} \right]\)
• B) \(\left[ \begin{array} { c c c }
• - 7 & 5 & - 8 \\
• - 10 & - 8 & - 10 \\
• - 5 & 34 & - 8 \\
• 1 & 16 & 16 \\
• - 6 & - 7 & 8
• \end{array} \right]\)
• C) \(\left[ \begin{array} { c c c }
• - 1 & 5 & - 8 \\
• 16 & - 8 & 1 \\
• - 5 & 34 & - 8 \\
• - 10 & 16 & - 10 \\
• - 6 & - 7 & 8
• \end{array} \right]\)
• D) \(\left[ \begin{array} { c c c }
• - 9 & 5 & - 8 \\
• 1 & - 8 & 16 \\
• - 6 & 34 & 8 \\
• - 10 & 16 & - 10 \\
• - 5 & - 7 & - 8
• \end{array} \right]\)
• E) \(\left[ \begin{array} { c c c }
• - 3 & 5 & - 8 \\
• 1 & - 8 & 16 \\
• - 8 & 34 & - 5 \\
• - 10 & 16 & - 10 \\
• 8 & - 7 & - 6
• \end{array} \right]\)

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Definitions:

Coefficient Of Correlation

A statistical measure that calculates the strength and direction of a linear relationship between two quantitative variables, ranging from -1 to 1.

Dependent Variable

In an experiment or statistical model, the variable that is being tested and measured, often influenced by the independent variable(s).

Independent Variable

In an experiment, the variable that is intentionally changed to observe its effect on the dependent variable.

Least Squares Estimate

A statistical method used to determine the line of best fit by minimizing the sum of squares of the differences between observed and predicted values.