A Measure of Variability Is a Numerical Index

question 22

Multiple Choice

A measure of variability is a numerical index:

• A) of the central tendency of the data values in a set of data
• B) that indicates how spread out the data values are in a set of data
• C) that indicates the level of skewness of the data
• D) that indicates if two variables vary together

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Definitions:

Skin Color

A phenotypic trait that is primarily determined by genetic inheritance and exposure to the sun, varying widely among individuals and populations.

Race

Socio-political categorizations of humans based on physical characteristics, heritage, and genetics, often mistakenly assumed to have significant biological basis.

Blood Groups

Categories into which human blood can be divided, based on the presence or absence of certain antigens; includes A, B, AB, and O blood types.

Cline

A gradual change in certain characteristics exhibited by members of a species over a geographical area.