If a Data Set Has an Even Number of Observations

question 89

Multiple Choice

If a data set has an even number of observations, the median _____.

• A) cannot be determined
• B) is the observation recorded most often
• C) must be equal to the mean
• D) is the average value of the two middle items when all items are arranged in ascending order

---

Definitions:

Concrete Operational

A stage in Piaget's theory of cognitive development where children (around ages 7 to 12) gain the ability to think logically about concrete and specific objects and events.

Sensory-Motor

Referring to the integration of sensory input and motor output, enabling coordinated movements and actions in response to external stimuli.

Concrete Operations

A stage in Piaget's theory of cognitive development where children aged about 7 to 11 years can logically think about concrete objects and events.

Formal Operations

refers to the final stage in Piaget's cognitive development theory, characterized by the ability to think abstractly and logically.