The frequency histogram for the heights (in cm) of the 25 students in a business statistics class is given below. 
What is the best measure of variability?
Definitions:
Whole-word Instruction
A method of teaching reading that emphasizes recognition of words as whole pieces of language.
Scientific Goal
An objective or aim pursued in scientific research, often directed towards understanding, explaining, or applying knowledge to solve practical problems.
Peer Evaluations
assessment processes where individuals of similar status assess each other's work, performance, or attributes.
Developmental Domain
Specific areas of growth and change in a child's life, such as cognitive, social-emotional, physical, and language development.
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