Which of the Following Statements Is NOT True Regarding the Z-Score

question 25

Multiple Choice

Which of the following statements is NOT true regarding the z-score?

• A)it can be calculated as the data value minus the mean divided by the variance
• B)it is a standardized value (has no units)
• C)it denotes the number of standard deviations a data value is from the mean
• D)a data value less than the mean will have a z-score less than zero
• E)a data value with a z-score less than -3 or greater than +3 might be considered an outlier

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Definitions:

SMTP

Simple Mail Transfer Protocol; a standard protocol used for sending emails across the Internet, ensuring the reliable and secure delivery of outgoing mail.

PGP

Pretty Good Privacy, a data encryption and decryption computer program that provides cryptographic privacy and authentication for data communication. PGP is often used for securing emails.

Encryption

Encoding information or data to protect it against access by unauthorized individuals.

Public-key Encryption

An encryption method that uses a pair of keys, one for encrypting the message (public key) and one for decrypting it (private key).