What Is the Variance

question 18

Multiple Choice

What is the variance?

• A) The difference between the lowest and highest score
• B) The difference between a score and the mean
• C) The average squared distance from the mean
• D) A measure of central tendency

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Definitions:

802.11ac

An IEEE wireless networking standard that provides high-throughput wireless local area networks (WLANs) on the 5 GHz band.

Mobile Device Operating System

The operating system that runs on mobile devices such as smartphones and tablets, managing both hardware and software.

SIM Card

Short for Subscriber Identity Module, a removable smart card used in mobile phones and some other devices, storing user’s subscription information and phonebook data.

IMSI

International Mobile Subscriber Identity, a unique number associated with all cellular networks mobile phone users that helps in identifying the network to which the mobile phone belongs.