Can the Sample Variance Ever Be a Negative Number? If

question 111

Essay

Can the sample variance ever be a negative number? If so, for what types of data? If not, why not? Can the sample variance ever be zero? If so, for what types of data? If not, why not? Explain your reasoning.

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Definitions:

Infants

Very young children, typically those under one year of age, in their earliest stages of development.

Hidden Objects

Objects that are not visible to the observer because they are covered, concealed, or not within the line of sight.

Symbolic Representation

The use of symbols or abstract signs to represent ideas, objects, or actions in cognitive processing and communication.

Object Permanence

The understanding that objects continue to exist even when they cannot be seen, heard, or otherwise sensed, typically developed in infancy.