Tell What Elementary Row Operation Can Be Applied To $\left[\begin{array}{rrrr}3 & 6 & -2 & 5 \\4 & 7 & 5 & -2 \\-3 & 2 & 0 & 3\end{array}\right]$

question 43

Multiple Choice

Tell what elementary row operation can be applied to
$\left[\begin{array}{rrrr}3 & 6 & -2 & 5 \\4 & 7 & 5 & -2 \\-3 & 2 & 0 & 3\end{array}\right]$
to obtain $\left[\begin{array}{rrrr}15 & 27 & 13 & -1 \\4 & 7 & 5 & -2 \\-3 & 2 & 0 & 3\end{array}\right]$

• A) \(5 R_{1}\)
• B) \(3 R_{2}+R_{1}\)
• C) \(3 R_{1}+R_{2}\)
• D) \(3 R_{2}-R_{3}\)

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Definitions:

Skewed

A description of the asymmetry in the probability distribution of a real-valued random variable, where the tail of the distribution is longer on either the right (positively skewed) or the left (negatively skewed) side.

Sample Mean

The average value of a set of data points collected from a sample of a population.

Median

The middle value of a data set when it is ordered from least to greatest, effectively splitting the data set into two equal parts.

Sample Variance

A measure of the variability or spread of a sample data set, calculated as the average of the squared differences from the sample mean.