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Undocumented immigrants pay local sales taxes, and many of them also pay state, local, and federal income tax and Social Security tax. They also purchase items from local merchants, increasing the amount these merchants pay in taxes. In addition, they work for low salaries, which increases the earnings of their employers and the amount of taxes these employers pay. Thus, it is not correct to say that undocumented immigrants contribute nothing to the communities in which they live.
Standard Deviation
A measure of the amount of variation or dispersion in a set of values, indicating how spread out the values are.
Greek Letter
Symbols used in mathematics, science, and engineering to denote variables, constants, and special functions.
Highest Score
The highest mark or value obtained among a set of observed scores or values.
Lowest Score
The smallest value in a data set or distribution.
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