The Questions Below Refer to Decisions Made by Statisticians and Referred

question 29

Essay

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?

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Definitions:

Pictures

can be used as visual aids or stimuli in various research or educational settings to evoke responses or assist in data collection.

Psychological Core

The representation of the “real” person which typically develops in early childhood and comes from parents, teachers, and caregivers.

Role-Related Behavior

The ways in which an individual acts in a particular situation, usually gained through modeling and social learning experiences.

Typical Responses

The ways individuals usually adjust.