Methods for Obtaining a Sample Are Called

question 18

Multiple Choice

Methods for obtaining a sample are called

• A) sample surveys.
• B) probability sampling.
• C) random sampling.
• D) sampling designs.

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Definitions:

Simple Linear Regression

A statistical method that shows or predicts the relationship between two continuous variables, using a straight line to describe the linear relationship.

Correlation Coefficient

A statistical measure that calculates the strength and direction of a linear relationship between two quantitative variables.

Residuals

Differences between observed values and the estimated values in a statistical model, reflecting the amount of unexplained variance in the model.

Fitted Values

Estimated values predicted by a regression model, based on the observed data.