$\operatorname { var } ( a X + b Y ) =$

question 26

Multiple Choice

$\operatorname { var } ( a X + b Y ) =$

• A) \(a ^ { 2 } \sigma _ { X } ^ { 2 } + b ^ { 2 } \sigma _ { Y } ^ { 2 }\)
• B) \(a ^ { 2 } \sigma _ { X } ^ { 2 } + 2 a b \sigma _ { X Y } + b ^ { 2 } \sigma _ { Y } ^ { 2 }\)
• C) \(\sigma _ { X Y } + \mu _ { X } \mu _ { Y }\)
• D) \(a \sigma _ { X } ^ { 2 } + b \sigma _ { Y } ^ { 2 }\)

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Definitions:

Pan-Indianism

A movement or ideology that promotes unity among different Native American tribes in response to shared social and political challenges.

American Indians

Indigenous peoples of the United States, including various tribes, nations, and communities, each with their own distinct cultures, languages, and histories.

Urban Areas

Geographical areas characterized by higher population density and vast human features in comparison to areas surrounding it, often associated with cities and metropolitan regions.

Methodological Choices

Refers to decisions researchers make on the techniques, strategies, and processes used in conducting a study or investigation.