Given Vectors $\mathbf { u } = \langle - 2 , - 3 \rangle$

question 81

Multiple Choice

Given vectors $\mathbf { u } = \langle - 2 , - 3 \rangle$ and $\mathbf { v } = \langle 4 , - 4 \rangle$ , determine the quantity indicated below.
$- 4 \mathbf { u } \cdot 3 \mathbf { v }$

• A) \(- 216\)
• B) \(- 240\)
• C) 68
• D) \(- 48\)
• E) 4

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Definitions:

Face Validity

Refers to the extent to which a test appears to measure what it is intended to measure, based purely on its surface characteristics.

Mean Score

The average value obtained by dividing the sum of all values in a set by the number of values in that set; used as a measure of central tendency in statistics.

Standard Deviation

A statistical measure of the dispersion or variability within a set of numerical data, indicating how much individual data points differ from the mean.

Mode

The most frequent score.