Exhibit 1-4
In many universities, students evaluate their professors by means of answering a questionnaire. Assume a questionnaire is distributed to a class of 45 students. Students are asked to answer the following:
1. Sex
2. Race (African descent, Caucasian, Other)
3. Age
4. Number of hours completed
5. Grade point average
6. My instructor is a very effective teacher
-Refer to Exhibit 4-1. How many observations are in this data set?
A)5
B)6
C)3
D)45

Question

Exhibit 1-4
In many universities, students evaluate their professors by means of answering a questionnaire. Assume a questionnaire is distributed to a class of 45 students. Students are asked to answer the following:
1.  Sex
2.  Race (African descent, Caucasian, Other)
3.  Age
4.  Number of hours completed
5.  Grade point average
6.  My instructor is a very effective teacher
-Refer to Exhibit 4-1. How many observations are in this data set?
A)5
B)6
C)3
D)45

Quizplus · Accepted Answer

The number of observations in a data set corresponds to the number of respondents or entities providing data. In this case, there are 45 students, so there are 45 observations.

Exhibit 1-4 in Many Universities, Students Evaluate Their Professors by Means of Means