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Child development frames of reference, like those of Erikson and Piaget, tend to share with symbolic interaction theories an emphasis on
68-95-99.7 Rule
A statistical rule stating that in a normal distribution, about 68% of observed values fall within one standard deviation, 95% within two, and 99.7% within three standard deviations of the mean.
Normally Distributed
Describes a statistical distribution where data points are symmetrically distributed around the mean, forming a bell-shaped curve.
Standard Deviation
A statistical measure that represents the amount of variation or dispersion from the average in a set of data.
Assignable Cause
A specific factor or reason for variation in a process that can be identified and managed.
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