Why Are Precursor Events Important

question 17

Multiple Choice

Why are precursor events important?

• A)Precursor events provide warning that a hazardous process is becoming active.
• B)Precursor events help to define the magnitude and frequency of an event.
• C)Precursor events define the history of a hazardous process.
• D)Precursor events reveal linkages between hazards.

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Definitions:

Mean

The arithmetic average of a set of values, calculated by summing all the values and then dividing by the number of values.

Variance

A measure of the dispersion or spread of a set of data points around their mean value.

Variance

A measure of how much the values in a data set differ from the mean of that set.

Data

Pieces of factual information collected together for analysis or used to reason and make decisions.