A Sampling Method That Separates the Population into Different Subgroups,and

question 11

Multiple Choice

A sampling method that separates the population into different subgroups,and then samples all of these subgroups,is the definition for:

• A)stratified sampling.
• B)area sampling.
• C)cluster sampling.
• D)simple sampling.
• E)comprehensive sampling.

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Definitions:

Correlation

A statistical measure that expresses the extent to which two variables change together, indicating the strength and direction of their relationship.

Probability Distribution

A statistical description enumerating all likely values and their corresponding probabilities for a random variable within a set interval.

Error Variable \(ε\)

In statistical modeling, particularly in linear regression, it represents unobserved random errors or deviations of observed values from their expected values.

Scatter Diagram

A graphical representation that shows the relationship between two quantitative variables by plotting data points on a two-dimensional plane.