50 Students Were Randomly Sampled and Asked Questions About Their

question 67

Multiple Choice

50 students were randomly sampled and asked questions about their exercise habits. One of the questions they were asked concerned the frequency of exercise, defined to be the number of times they exercised in a week. This variable would be characterized as which type of random variable?

• A) discrete
• B) continuous

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Definitions:

Biomass

The total mass of organisms within a given area or ecosystem at a given time, often used as an energy resource.

Gross Primary Productivity

The total amount of solar energy that photosynthetic organisms capture and convert to organic compounds in a given area over a certain period.

Nitrogen Cycle

The worldwide circulation of nitrogen from the abiotic environment into living things and back into the abiotic environment.

Carbon Cycle

The worldwide circulation of carbon from the abiotic environment into living things and back into the abiotic environment.