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Guion S.Bluford,Jr.and Mae E.Jamison were,respectively,the first black man and first black woman to
Normal Curve
A symmetrical, bell-shaped curve that represents the distribution of many types of data where most values cluster around a central mean.
Bell Curve
A graphical depiction of a normal distribution, showing how the frequency of an event's occurrence varies in relation to its deviation from the mean.
Population
The total number of individuals or organisms residing within a particular geographical area or belonging to a specific category.
Mental Age
An assessment measure that reflects the mental ability of an individual expressed in the age at which normal individuals reach an equivalent level of performance.
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