Question

Does a student's attitude toward graphs affect his or her performance in an economics course? Researchers revisited this question in a follow-up study. [Source: Original study: Cohn, E., Cohn, S., Balch, D. C., & Bradley, Jr., J. (2004) The relation between student attitudes toward graphs and performance in economics. American Economist, 48(2), 41-52.] For a sample of students, data were collected on the following variables: Tests (number of test questions answered correctly during the semester) Attitude (0student thinks that graphs used in the course did not contribute to his or her learning, 1-graphs contributed to learning) Gender (0male, 1 female) Academic Major (1business, 2liberal arts, 3science and mathematics, 4-engineering) Age (in years) Recognizing the measurement scale of the data collected on each variable is important because the type of data dictates the appropriate data summary methods and statistical procedures Which variable(s) in the data set are measured using a nominal scale? Attitude, Gender, and Academic Major Attitude None of the variables Academic Major Which variable(s) in the data set are measured using an ordinal scale? O Attitude Academic Major None of the variables Attitude and Academic Major Which variable(s) in the data set are measured using a ratio scale? O Tests, Gender, and Age Tests and Gender O Tests and Age Tests, Academic Major, and Age

Answer 1

1.Nominal represent rank so option A attitude,gender and academic major.

2.ordinal represent order so option B academic major.

3.option C test and age represent ratio scale.