The questions below refer to decisions made by statisticians and referred to in the text. Answer each of the following questions in a few sentences:
(a)Why was
rather than 
chosen to be used in building the formula for the variance?
(b)Why is s more commonly used than s2 as a more useful measure of variability?
(c)Why was 
chosen over 
when using s2 to estimate σ2?
(d)What factor should be considered when choosing between the median or mean as a description of the "center" of a data set?
Definitions:
Absorbing Novel
An engaging and captivating book that fully immerses the reader in its narrative and world.
Piaget's Concept
Piaget's concept is based on his theory of cognitive development, which suggests that children move through four stages of mental development, with each stage marked by distinct changes in thought and understanding.
Egocentrism
A cognitive trait where an individual has difficulty understanding or assuming any perspective other than their own.
Object Permanence
The understanding that objects continue to exist even when they cannot be seen, heard, or otherwise sensed, a concept fundamental to cognitive development in infants.
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