Consider the following part of a data set:
Age
(years) Sex Only child? Height
(inches) Weight
(pounds) Credit
Hours GPA Major
21 Female Yes 67.00 140.0 16 3.60 animal science
20 Female No 62.00 130.0 18 3.86 biology
28 Female No 64.00 188.0 21 3.25 psychology
21 Male No 65.00 140.0 15 2.95 psychology
24 Female No 67.00 130.0 20 3.00 anthropology
22 Male Yes 68.00 135.0 15 2.94 journalism
List the variables in the data set. Indicate whether each variable is treated as categorical or quantitative in this data set. If the variable is quantitative, state the units.
In November 2003 Discover published an article on the colonies of ants. They reported some basic information about many species of ants and the results of some discoveries found by myrmecologist Walter Tschinkel of the University of Florida. Information included the scientific name of the ant species, the geographic location, the depth of the nest (in feet), the number of chambers in the nest, and the number of ants in the colony. The article documented how new ant colonies begin, the ant-nest design, and how nests differ in shape, number, size of chambers, and how they are connected, depending on the species. It reported that nest designs include vertical, horizontal, or inclined tunnels for movement and transport of food and ants.
Question 2
One of the reasons that the Monitoring the Future (MTF) project was started was to study changes in the beliefs, attitudes, and behavior of young people in the United States.
Data are collected from 8th, 10th and 12th graders each year. To get a representative nationwide sample, surveys are given to a randomly selected group of students. In Spring 2004, students were asked about alcohol, illegal drug, and cigarette use. Describe the W's, if the information is given. If the information is not given, state that it is not specified.
Who:
What:
When:
Where:
How:
Why:
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