For a Random Variable X,the Mean Value of the Squared

question 1

Multiple Choice

For a random variable X,the mean value of the squared deviations of its values from their expected value is called its

• A)Standard Deviation
• B)Mean
• C)Probability
• D)Variance

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Definitions:

Magnetite

An iron oxide mineral that is typically black and is strongly magnetic.

Quartz

A very common rock-forming silicate mineral consisting of crystalline silica.

Feldspar

A very common rock-forming silicate mineral that is abundant in most igneous and metamorphic rocks and some sedimentary rocks.

Calcite

A common rock-forming calcium carbonate mineral occurring in limestone and a variety of water-related deposits.