Question

Extinct birds. Biologists at the University of California (Riverside) are studying the patterns of extinction in the New Zealand bird population. (Evolutionary Ecology Research, July 2003.) At the time of the Maori colonization of New Zealand (prior to European contact), the following variables were measured for each bird species: a. Flight capability (volant or flightless) b. Type of habitat (aquatic, ground terrestrial, or aerial terrestrial) c. Nesting site (ground, cavity within ground, tree, cavity above ground) d. Nest density (high or low) e. Diet (fish, vertebrates, vegetables, or invertebrates) f. Body mass (grams) g. Egg length (millimeters) h. Extinct status (extinct, absent from island, present) Identify each variable as quantitative or qualitative.

Name: Problem 20, Chapter 1: Statistics
Uploaded: 2022-02-03T21:36:32-08:00
Duration: 2 min
Channel: Nick Johnson

   Extinct birds. Biologists at the University of California (Riverside) are studying the patterns of extinction in the New Zealand bird population. (Evolutionary Ecology Research, July 2003.) At the time of the Maori colonization of New Zealand (prior to European contact), the following variables were measured for each bird species:
a. Flight capability (volant or flightless)
b. Type of habitat (aquatic, ground terrestrial, or aerial terrestrial)
c. Nesting site (ground, cavity within ground, tree, cavity above ground)
d. Nest density (high or low)
e. Diet (fish, vertebrates, vegetables, or invertebrates)
f. Body mass (grams)
g. Egg length (millimeters)
h. Extinct status (extinct, absent from island, present) Identify each variable as quantitative or qualitative.

Statistics

James T. McClave,… 13th Edition

Chapter 1, Problem 20

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Solved by Expert Nick Johnson

02/03/2022

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Step 1: Identify the type of each variable based on its description and possible outcomes. Show more…

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Extinct birds. Biologists at the University of California (Riverside) are studying the patterns of extinction in the New Zealand bird population. (Evolutionary Ecology Research, July 2003.) At the time of the Maori colonization of New Zealand (prior to European contact), the following variables were measured for each bird species: a. Flight capability (volant or flightless) b. Type of habitat (aquatic, ground terrestrial, or aerial terrestrial) c. Nesting site (ground, cavity within ground, tree, cavity above ground) d. Nest density (high or low) e. Diet (fish, vertebrates, vegetables, or invertebrates) f. Body mass (grams) g. Egg length (millimeters) h. Extinct status (extinct, absent from island, present) Identify each variable as quantitative or qualitative.

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Key Concepts

Quantitative Variables

Quantitative variables represent numerical values that can be measured and expressed in numbers. These variables allow for mathematical calculations and statistical analyses, such as means and standard deviations. They are important for identifying relationships, differences, and trends within data sets in research and various analytical contexts.

Qualitative Variables

Qualitative variables, also known as categorical variables, represent non-numerical data that can be grouped into categories or labels. These variables capture qualities, characteristics, or types and are typically analyzed using frequencies and proportions rather than arithmetic operations. They are essential in describing and classifying subjects in studies, and they play a critical role in designing research frameworks and interpreting observational data.

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