Over the Last Century, Which Cycle Has Had the Greatest

question 28

Multiple Choice

Over the last century, which cycle has had the greatest effect on cycles of salmon production in the North Pacific?

• A) El Niño Southern Oscillation (ENSO)
• B) Pacific Decadal Oscillation (PDO)
• C) Sunspot activity cycle
• D) Lunar cycle

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Definitions:

Interval Scale

A scale of measurement that shows the order of values and the exact differences between them, but without a true zero point.

Ordinal Scale

A scale of measurement where data is ordered, but the differences between data points cannot be assumed to be equal.

Statistical Treatments

Methods applied to data for the purpose of drawing conclusions or making inferences, including statistical tests and computations.

Describing Results

The process of reporting the findings of a study, including the presentation and interpretation of data.