Let Y = $\left( \begin{array} { l } - 2 \\3 \\10 \\2 \\2\end{array} \right)$

question 27

Essay

Let Y = $\left( \begin{array} { l } - 2 \\3 \\10 \\2 \\2\end{array} \right)$ and X = $\left( \begin{array} { l l } 1 & 0 \\1 & 1 \\1 & 3 \\1 & - 1 \\1 & 2\end{array} \right)$ Find $X ^ { \prime }$ X, $X ^ { \prime }$ Y, ( $X ^ { \prime }$ X)^-1 and finally ( $X ^ { \prime }$ X)^-1
$X ^ { \prime }$ Y.

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Definitions:

Price-Earnings Ratio

The price-earnings ratio (P/E ratio) is a valuation ratio of a company's current share price compared to its per-share earnings.

Market Price

The present trading value for assets or services within the scope of a commercial market.

Shares Of Stock

Units of ownership interest in a corporation or financial asset, giving shareholders a proportion of the corporation's assets and profits.

Profit Margin

A financial metric representing the percentage of revenue that remains as profit after all expenses are deducted.