The Term "Concrete" Is Used to Describe Concrete Operations Because

question 45

Multiple Choice

The term "concrete" is used to describe concrete operations because

• A) understating reversibility at this stage is so hard (like concrete).
• B) once a child focuses on one aspect of a task, his thinking appears to be unmovable (set in stone or concrete).
• C) the path of understanding is paved with challenges (like a concrete road).
• D) individuals in this stage can mentally manipulate objects as long as they are present (concrete example).

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Definitions:

Poisson Random Variable

Represents a statistical measure that models the number of times an event happens in a fixed interval of time or space when these events occur with a known constant mean rate independently of the time since the last event.

Standard Deviation

A measure of the amount of variation or dispersion in a set of values, calculated as the square root of variance.

Discrete Random Variable

A type of random variable that can take on a countable number of distinct values, often used to model scenarios where outcomes are countable.

Expected Number

The calculated average or mean value of a numerical random variable, representing what one expects to happen over numerous trials.