Question

Please answer both questions. Thank you.

Aa 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, 1r, 1.(2004) The relation between student attitudes toward graphs and performance in economics. American Economist, 48(2), 41-52.1 For a sample of students, data were collected on the following variables: . Tests (number of test questions answered correctly during the semester) Attitude (0 student thinks that graphs used in the course did not contribute to his or her learning, 1- graphs contributed to learning) - Gender (O male, 1 -femaie . Academic Major (1 business, 2 - liberal arts, 3 "science and mathematics, 4 engineering) . Age (Cin years) Recognizing the measurement scale of the data collected on each variabie is important because the type of data dictates the appropriate data summary methods and statistical procedures. Which variable(s) in the data set are mveasured using a nominal scale O Academic Major O Attitude, Gender, and Academic Major O Attitude O None of the variables which variablecs) in the data set are reasurts using an ordtinal scale? O Academic Mejor O tione of thn variables O Atthude O Attitude and Acadernc Major wsich varabies iw the sata set are measured using a race wcat? O Tests and Gender O Tets Gender e O fests and Age O Nests, Acacemic Major, and Age

Answer 1

which variable(s) in the dataset are measured using a nominal scale
Attitude, Gender and Academic major

Which variable in the dataset are measured using an ordinal scale
None of the variable

Which variable in the data set are measured using a ratio scale
Tests and Age