Vectors And

question 29

Multiple Choice

Vectors
And
Are shown.What is the magnitude of a vector
If
?

• A)46
• B)10
• C)30
• D)78
• E)90

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Definitions:

Standard Deviation

A measure of the amount of variation or dispersion of a set of values; a low standard deviation means the values are close to the mean, while a high standard deviation means the values are dispersed over a wider range.

Standard Normal Random Variable

A random variable with a mean of zero and a variance of one, following the standard normal distribution.

Area

The measure of the extent of a two-dimensional surface or shape, expressed in square units.

Z

Often refers to a Z-score in statistics, representing the number of standard deviations a data point is from the mean.