Question

Identify the observational unit for each of the following variables.

Whether a roll of toilet paper is hung so that the paper comes out over the top or underneath

Whether or not an applicant for graduate school is accepted

Ratio of backpack weight to body weight for a college student

Whether a person classifies him or herself as a political conservative, moderate, or liberal

Whether or not a person has a tattoo

Whether or not a participant in a sport suffers an injury in a given year

A sport's injury rate per 1000 participants

A state's rate of automobile thefts per 1000 residents

Ounces of liquid in a “small soda” sold at a baseball game

Number of “close friends” a person reports having

Age of a bride on the wedding day

Whether the bride is older, younger, or the same age as the groom in a couple getting married

The difference in ages (groom's age minus bride's age, which could be negative) of a couple getting married

Answer 1

1. Whether a roll of toilet paper is hung so that the paper comes out over the top or underneath = Roll of toilet paper.
2. Whether or not an applicant for graduate school is accepted = Applicant for graduate school.
3. Ratio of backpack weight to body weight for a college student = College student.
4. Whether a person classifies him or herself as a political conservative, moderate, or liberal = Person.
5. Whether or not a person has a tattoo = Person.
6. Whether or not a participant in a sport suffers an injury in a given year = Sport participant.
7. A sport's injury rate per 1000 participants = Participants.
8. A state's rate of automobile thefts per 1000 residents = Residents.
9. Ounces of liquid in a “small soda” sold at a baseball game = Small soda.
10. Number of “close friends” a person reports having = Person.
11. Age of a bride on the wedding day = Bride.
12. Whether the bride is older, younger, or the same age as the groom in a couple getting married = Bride.
13. The difference in ages (groom's age minus bride's age, which could be negative) of a couple getting married = Couple.