Which of the Following Refers to a Small, Portable Storage

question 49

Multiple Choice

Which of the following refers to a small, portable storage device that can be used to back up data and transfer it from one computer to another?

• A) USB flash drive
• B) projector
• C) mouse
• D) barcode scanner
• E) Bluetooth speaker

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Definitions:

Population Variance

A measure that quantifies the spread of a set of data points in a population, calculated as the average of the squared differences from the Mean.

Confidence Interval

A spectrum of numbers resulting from sample measurements, which is thought to cover the value of an unidentified population feature.

Standard Deviation

A measure of the amount of variation or dispersion in a set of values, showing how spread out the data points are from the mean.

Chi-squared Distribution

A statistical distribution that is used to describe the distribution of a sum of squared random variables, often used in hypothesis testing.