If There Is a Very Strong Correlation Between Two Variables

question 16

Multiple Choice

If there is a very strong correlation between two variables, then the coefficient of determination must be

• A) much larger than 1, if the correlation is positive.
• B) much smaller than -1, if the correlation is negative.
• C) equal to zero.
• D) closer or equal to 1.

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Definitions:

Stratified Random Sampling

A sampling method that involves dividing the population into distinct subgroups and then randomly selecting samples from each subgroup to ensure representation.

Annual Income

The total amount of money earned or received by an individual or entity within one calendar year.

Subsample

A subset of a larger sample or population, extracted for specific analysis or investigation purposes.

National Data Sets

Large-scale databases that collect and store data at a national level, often used for research, policy-making, and analysis.