statistics-2bykeller..doc

CHAPTER 2 GRAPHICAL AND TABULAR DESCRIPTIVE TECHNIQUES SECTIONS 1 MULTIPLE CHOICE QUESTIONS 1. Which of the following statements is false? All calculations are permitted on interval data All calculations are permitted on nominal data The most important aspect of ordinal data is the order of the data values The only permissible calculations on ordinal data are ones involving a ranking process 2. The average number of units earned per semester by college students is suspected to be rising. A researcher at Boston College wishes to estimate the number of units earned by students during the spring semester of 2004 at Boston. To do so, he randomly selects 250 student transcripts and records the number of units each student earned in the spring term of 2004. The variable of interest to the researcher is the number of students enrolled at Boston College during the spring term of 2004 average indebtedness of Boston College students enrolled in the spring age of Boston College students enrolled in the spring number of units earned by Boston College students during the spring term of 2004 3. The classification of student major (accounting, economics, management, marketing, other) is an example of a categorical random variable. a discrete random variable a continuous random variable a parameter. 4. A study is under way in national forest to determine the adult height of pine trees. Specifically, the study is attempting to determine what factors aid a tree in reaching heights greater than 50 feet tall. It is estimated that the forest contains 32,000 adult pines. The study involves collecting heights from 500 randomly selected adult pine trees and analyzing the results. The variable of interest in the study is the age of a pine tree in the national forest. height of a pine tree in the national forest. number of pine trees in the national forest. species of trees in the national forest. 5. The classification of student class designation (freshman, sophomore