Question

4. The items below appear on an employment application. Determine the level of measurement of the data. (a) Highest grade level completed (c) Gender (b) Year of college graduation (d) Number of years at last job 5. Read the following on attendance l and grades, and answer the questions. A study conducted at Unity University revealed that students who attended class 95 to 100% of the time usually received an A in the class. Students who attended class 80 to 90% of the time usually received a B or C in the class. Students who attended class less than 80% of the time usually received a D or an F or eventually withdrew from the class. Based on this information, attendance and grades are related. The more you attend class, the more likely it is you will receive a higher grade. If you improve your attendance, your grades will probably improve. Many factors affect your grade in a course. One factor that you have considerable controlover is attendance. You can increase your opportunities for learning by attending class more often. (a) What are the variables under study? (b) What are the data in the study? (c) Are descriptive, inferential, or both types of statistics used? (d) What is the population under study? (e) Was a sample collected? If so, from where? (f) From the information given, comment on the relationship between the variables.​

Answer 1

4. The level of measurement for each item on the employment application:

(a) Highest grade level completed - ordinal

(b) Year of college graduation - interval

(c) Gender - nominal

(d) Number of years at last job - ratio

5. (a) The variables under study are attendance and grades.

(b) The data in the study are the percentages of attendance and the corresponding grades received by the students.

(c) Descriptive statistics are used to describe the relationship between attendance and grades.

(d) The population under study is the students at Unity University.

(e) Yes, a sample was collected from the students at Unity University.

(f) Based on the information given, there is a positive relationship between attendance and grades. The more a student attends class, the more likely they are to receive a higher grade. Improving attendance can increase the opportunities for learning and improve grades. However, it is important to note that attendance is not the only factor that affects grades in a course.

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