The Following Data Represent Scores on a Pop Quiz in a Statistics

question 104

Multiple Choice

The following data represent scores on a pop quiz in a statistics section. (See the Excel Data File.) Suppose the data are grouped into five classes, and one of them will be "30 up to 44"-that is, {x; 30 ≤ x < 44}. The relative frequency of this class is ________.

• A) 0.20
• B) 0.25
• C) 4
• D) 5

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Definitions:

Interference Competition

A form of competition where organisms directly interact with each other to access resources, often by physically preventing their rivals from exploiting those resources.

Coevolution

The joint evolution of two closely interacting species; macroevolutionary pattern in which each species is a selective agent for traits of the other.

Intermediate Disturbance Hypothesis

Species richness is greatest in communities in which disturbances are moderate in their magnitude and frequency.

Pioneer Species

Pioneer species are the first to colonize previously disrupted or damaged ecosystems, starting a chain of ecological succession that leads to increased biodiversity.