Teachers Ages The ages (in years)of a sample of 25 teachers are as follows: 
{Teachers Ages Narrative} Draw a frequency histogram of this data which contains four classes. What is the shape of the histogram?
Definitions:
Myelination
The coating of axons with myelin.
Differentiation
The processes by which behaviors and physical structures become specialized.
Habituation
Becoming used to a stimulus and therefore paying less attention to it.
Babinski reflex
A reflex action of the foot in which the big toe extends upwards and the other toes fan out when the sole of the foot is firmly stroked, common in infants.
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