Which Assumption Is Necessary for the Expected Value of B1hat

question 6

Multiple Choice

Which assumption is necessary for the expected value of b1hat to equal b1?

• A) Errors are homoscedastic.
• B) Errors are not correlated with each other.
• C) The error is uncorrelated with the independent variable.
• D) The error is uncorrelated with the dependent variable.

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Definitions:

Pearson Product-moment

A correlation coefficient that measures the linear correlation between two variables, indicating the strength and direction of their relationship.

Correlation Coefficient

An index of how strongly two variables are related to each other.

Alternate Forms Reliability

A measure of reliability obtained by administering different versions of an assessment tool to the same group of individuals.

Test-retest Reliability

A measure of consistency where a test is administered twice to the same participants under similar conditions, and scores are compared.