A Persistence Forecast

question 70

Multiple Choice

A persistence forecast

• A)requires knowledge of local weather conditions at the time the forecast is made.
• B)requires knowledge of both local and regional weather conditions the day before the forecast is made.
• C)requires knowledge of local weather conditions in previous years.
• D)requires knowledge of regional weather conditions in previous years.

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Definitions:

Frequency

The rate at which a repeated event occurs, such as the number of times an event happens in a given period.

Flu Vaccination

A vaccine that protects against influenza, a contagious respiratory illness caused by influenza viruses.

Placebo

An inert substance or treatment given to a control group in experiments to compare effects with those of actual treatments.

Vaccinated

The state of having received a vaccine to produce immunity against a specific disease.