When Determining Whether to Include or Exclude a Variable in Regression

question 60

Multiple Choice

When determining whether to include or exclude a variable in regression analysis,if the p-value associated with the variable's t-value is above some accepted significance value,such as 0.05,then the variable:

• A) is a candidate for inclusion
• B) is a candidate for exclusion
• C) is redundant
• D) not fit the guidelines of parsimony

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Definitions:

Genetic Drift

A mechanism of evolution where random changes in the frequency of alleles within a population occur, often having a significant impact on smaller populations.

Habitat Isolation

A form of reproductive isolation where two species live in the same area but occupy different habitats, so they rarely encounter each other or breed.

Prezygotic

Refers to mechanisms that prevent individuals of different species or populations from mating or fertilizing eggs before the formation of a zygote.

Gene Flow

The transfer of genetic material from one population to another, which can alter the composition of gene pools and drive evolution.