A Data Set Has a Mean of 70 and a Standard

question 28

Multiple Choice

A data set has a mean of 70 and a standard deviation of 10. Which of the following might possibly be true?

• A) At least 15% of the data values are less than 40 or greater than 100.
• B) More than 90% of the data values are between 40 and 100.
• C) No more than 50% of the data values are between 50 and 90.
• D) No less than 30% of the data values are less than 50 or greater than 90.

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Definitions:

Self-Actualization

The realization or fulfilment of one's talents and potentialities, considered as a drive or need present in everyone.

Physiological Needs

are the basic physical requirements for human survival, such as air, water, food, shelter, and sleep, forming the base of Maslow's hierarchy of needs.

Belongingness Needs

The innate human need to feel connected and accepted by others, often considered a fundamental human motivation.

Alderfer's Existence Needs

A component of Clayton Alderfer's ERG theory, focusing on the basic physical and material well-being requirements akin to Maslow's physiological and safety needs.