Before Jonas Salk Discovered a Vaccine to Prevent Polio,people Noticed

question 81

Multiple Choice

Before Jonas Salk discovered a vaccine to prevent polio,people noticed a correlation between outside temperature and the incidence of polio.Polio cases tended to occur more in the summer months than in the winter months,and the public assumed that high temperatures alone contributed to infection.As it turned out,there was a positive correlation between temperature and polio outbreaks because polio tended to be contracted in swimming pools and other places where children congregated.This illustrates which of the following? Correlations are

• A) indicative of a causal relation.
• B) variable.
• C) invalid.
• D) no guarantee of a causal relation.
• E) unreliable.

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Definitions:

Inbreeding

In a professional context, the practice of consistently hiring or promoting from within the organization, potentially limiting diversity and fresh perspectives.

Insourcing

The practice of assigning tasks or projects to individuals or teams within the same organization instead of outsourcing to an external entity.

Job Fairs

Events where employers and job seekers meet to discuss employment opportunities.

Diverse Applicants

Individuals from various backgrounds and cultures seeking employment opportunities.