If Two Variables Are Perfectly Correlated,then ____

question 121

Multiple Choice

If two variables are perfectly correlated,then ____.

• A)all data points fall on the regression line
• B)the average error in predicting scores is very large
• C)the standard error of estimate is very large
• D)an increase in x leads to no change in Y

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Definitions:

Immunity

The ability of an organism to resist a particular infection or toxin by the action of specific antibodies or sensitized white blood cells.

Antigens

Substances often found on the surface of pathogens (like bacteria and viruses) that trigger an immune response when detected by the body.

Vaccination

The act of introducing a vaccine into the body to produce immunity to a specific disease.

Latent Infection

An infection that is present but does not exhibit symptoms until activated under certain conditions.