Which of the Following Is True About the Disk Drive

question 53

Multiple Choice

Which of the following is true about the disk drive shown in the figure above?

• A)It can be internal or external.
• B)Its platters are made of Mylar.
• C)Its speed is measured in milliseconds
• D)It contains a circuit board, called a cylinder.

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Definitions:

Standard Deviation

An index showing the degree of spread or variability among a collection of numbers.

Confidence Interval

A range of values, derived from the statistical analysis of data, that is likely to include the true population parameter with a certain level of confidence.

Sample

A subset of individuals or observations from a population used to estimate parameters or statistics of the whole population.

Mean

The average of a set of numbers, calculated by summing them up and dividing by the number of summands.