Find the Inverse of the Matrix $$\left[ \begin{array} { r r } 6 & 1 \\- 2 & 0\end{array} \right]$$

question 109

Multiple Choice

Find the inverse of the matrix.
- $$\left[ \begin{array} { r r } 6 & 1 \\- 2 & 0\end{array} \right]$$

• A) \(\left[ \begin{array} { r r } 0 & - \frac { 1 } { 2 } \\ 1 & 3 \end{array} \right]\)
• B) \(\left[ \begin{array} { l r } 1 & 3 \\ 0 & - \frac { 1 } { 2 } \end{array} \right]\)
• C) \(\left[ \begin{array} { r r } 0 & \frac { 1 } { 2 } \\ - 1 & 3 \end{array} \right]\)
• D) \(\left[ \begin{array} { c c } 3 & - \frac { 1 } { 2 } \\ 1 & 0 \end{array} \right]\)

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Definitions:

DfB

Degrees of Freedom Between groups, referring to the number of independent values in the calculation of variance between the different groups under study.

DfWG

Degrees of Freedom Within Groups, a statistical concept used in variance analysis to describe the number of independent pieces of information that went into the estimate of variability.

Critical Value

The threshold value that a test statistic must exceed to reject the null hypothesis in a statistical test.

Df

Abbreviation for degrees of freedom, indicating the number of values in a final calculation of a statistic that are free to vary.