The Variance of a Sample Was Reported to Be 144 $\sum ( x - \bar { x } ) ^ { 2 }$

question 27

Multiple Choice

The variance of a sample was reported to be 144.The report indicated that $\sum ( x - \bar { x } ) ^ { 2 }$ = 7200.What is the sample size?

• A) 49
• B) 50
• C) 51
• D) 52

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Definitions:

Kenneth Clark

An American psychologist who, with his wife Mamie Clark, played a key role in the Brown v. Board of Education case with their research on racial bias in education.

Racial Segregation

The enforced separation of different racial groups within a community, institution, or country.

U.S. Schools

Educational institutions in the United States, ranging from primary to higher education, governed by federal, state, and local laws and regulations.

Constitutional

Relating to the constitution or composition of something; in a legal context, pertaining to the laws that constitute a government or society.