chapter 1.1-1.2 day 2 hw
(please put your work on a separate sheet of paper. i do not want to see your work on
here)
classifying data by type in exercises 7–18, determine whether the data are
qualitative or quantitative. explain your reasoning.
7. telephone numbers in a directory 8. heights of hot air balloons
9. body temperatures of patients 10. eye colors of models
11. lengths of songs on mp3 player 12. carrying capacities of pickups
13. player numbers for a soccer team 14. student id numbers
15. weights of infants at a hospital 16. species of trees in a forest
17. responses on an opinion poll 18. wait times at a grocery store

classifying data by level in exercises 19–24, determine whether the data
are qualitative or quantitative, and identify the data set’s level of measurement.
explain your reasoning.
19. football the top five teams in the final college football poll released in
january 2010 are listed. (source: associated press)

1. alabama 2. texas 3. florida 4. boise state 5. ohio state
20. politics the three political parties in the 111th congress are listed below.

republican democrat independent
21. top salespeople the regions representing the top salespeople in a
corporation for the past six years are given.

southeast northwest northeast
southeast southwest southwest

Question

chapter 1.1-1.2 day 2 hw
(please put your work on a separate sheet of paper. i do not want to see your work on
here)
classifying data by type  in exercises 7–18, determine whether the data are
qualitative or quantitative. explain your reasoning.
 7. telephone numbers in a directory     8. heights of hot air balloons
 9. body temperatures of patients       10. eye colors of models
11. lengths of songs on mp3 player      12. carrying capacities of pickups
13. player numbers for a soccer team    14. student id numbers
15. weights of infants at a hospital    16. species of trees in a forest
17. responses on an opinion poll        18. wait times at a grocery store

classifying data by level  in exercises 19–24, determine whether the data
are qualitative or quantitative, and identify the data set’s level of measurement.
explain your reasoning.
19. football  the top five teams in the final college football poll released in
    january 2010 are listed. (source: associated press)

1. alabama  2. texas  3. florida  4. boise state  5. ohio state
20. politics  the three political parties in the 111th congress are listed below.

republican  democrat  independent
21. top salespeople  the regions representing the top salespeople in a
    corporation for the past six years are given.

southeast  northwest  northeast
    southeast  southwest  southwest

Accepted Answer

### Problem 7: Telephone numbers in a directory
# Brief Explanations:
Telephone numbers are used to identify or label a telephone line, not to represent a quantity that can be measured or counted in a numerical - value - based sense (e.g., we don't perform arithmetic operations on them to get a meaningful result related to quantity). So they are qualitative data.
# Answer:
Qualitative. Reason: Telephone numbers are used for identification (labeling) and do not represent a measurable quantity.

### Problem 8: Heights of hot air balloons
# Brief Explanations:
Heights are numerical values that can be measured (using units like meters, feet) and we can perform arithmetic operations on them (e.g., find the difference in heights between two balloons). So they are quantitative data.
# Answer:
Quantitative. Reason: Heights are numerical values that can be measured and are used to represent a quantity.

### Problem 9: Body temperatures of patients
# Brief Explanations:
Body temperatures are numerical values (measured in degrees, like Celsius or Fahrenheit) and we can perform operations such as finding the average temperature of a group of patients. So they are quantitative data.
# Answer:
Quantitative. Reason: Body temperatures are numerical values that represent a measurable quantity.

### Problem 10: Eye colors of models
# Brief Explanations:
Eye colors (like blue, brown, green) are categories or labels. They do not represent a quantity that can be measured numerically in a way that arithmetic operations make sense. So they are qualitative data.
# Answer:
Qualitative. Reason: Eye colors are categorical labels and do not represent a measurable quantity.

### Problem 11: Lengths of songs on MP3 player
# Brief Explanations:
Lengths of songs are numerical values (measured in seconds, minutes) and we can perform operations like finding the total length of a playlist or the average length of songs. So they are quantitative data.
# Answer:
Quantitative. Reason: Song lengths are numerical values that represent a measurable quantity.

### Problem 12: Carrying capacities of pickups
# Brief Explanations:
Carrying capacities are numerical values (measured in units like kilograms, pounds) and we can compare different pickups' capacities numerically (e.g., one pickup has a carrying capacity of 500 kg and another has 600 kg). So they are quantitative data.
# Answer:
Quantitative. Reason: Carrying capacities are numerical values that represent a measurable quantity.

### Problem 13: Player numbers for a soccer team
# Brief Explanations:
Player numbers are used to identify or label the players, not to represent a quantity (we don't add or subtract player numbers to get a meaningful result related to quantity). So they are qualitative data.
# Answer:
Qualitative. Reason: Player numbers are used for identification and do not represent a measurable quantity.

### Problem 14: Student ID numbers
# Brief Explanations:
Student ID numbers are used to identify or label students, not to represent a quantity (arithmetic operations on ID numbers do not give a meaningful result related to quantity). So they are qualitative data.
# Answer:
Qualitative. Reason: Student ID numbers are used for identification and do not represent a measurable quantity.

### Problem 15: Weights of infants at a hospital
# Brief Explanations:
Weights are numerical values (measured in units like grams, kilograms) and we can perform operations like finding the average weight of infants or the difference in weights between two infants. So they are quantitative data.
# Answer:
Quantitative. Reason: Weights of infants are numerical values that represent a measurable quantity.

### Problem 16: Species of trees in a forest
# Brief Explanations:
Species of trees are categories (like oak, pine, maple). They do not represent a quantity that can be measured numerically in a way that arithmetic operations make sense. So they are qualitative data.
# Answer:
Qualitative. Reason: Tree species are categorical labels and do not represent a measurable quantity.

### Problem 17: Responses on an opinion poll
# Brief Explanations:
Responses on an opinion poll (like "agree", "disagree", "neutral" or responses to a multiple - choice question with non - numerical options) are categories or labels. They do not represent a quantity that can be measured numerically in a way that arithmetic operations make sense. So they are qualitative data.
# Answer:
Qualitative. Reason: Opinion poll responses are categorical labels and do not represent a measurable quantity.

### Problem 18: Wait times at a grocery store
# Brief Explanations:
Wait times are numerical values (measured in seconds, minutes) and we can perform operations like finding the average wait time or the maximum wait time. So they are quantitative data.
# Answer:
Quantitative. Reason: Wait times are numerical values that represent a measurable quantity.

### Problem 19: Football - Top five teams in the final college football poll
# Brief Explanations:
- **Qualitative or Quantitative**: The data (team names) are categorical labels, so they are qualitative.
- **Level of Measurement**: The ranking (1st, 2nd, 3rd, 4th, 5th) has an order, but the differences between the ranks (e.g., the difference between 1st and 2nd is not the same as between 2nd and 3rd in a meaningful numerical sense) and there is no true zero. So the level of measurement is ordinal.
# Answer:
Qualitative, Ordinal. Reason: Team names are categorical (qualitative), and the ranking has an order (ordinal) but no meaningful difference between ranks or true zero.

### Problem 20: Politics - Three political parties in the 111th Congress
# Brief Explanations:
- **Qualitative or Quantitative**: The political parties (Republican, Democrat, Independent) are categorical labels, so they are qualitative.
- **Level of Measurement**: The categories have no inherent order (we can't say one party is "more" than another in a meaningful ordered sense), so the level of measurement is nominal.
# Answer:
Qualitative, Nominal. Reason: Political parties are categorical (qualitative) with no inherent order (nominal).

### Problem 21: Top Salespeople - Regions representing the top salespeople
# Brief Explanations:
- **Qualitative or Quantitative**: The regions (Southeast, Northwest, Northeast, Southwest) are categorical labels, so they are qualitative.
- **Level of Measurement**: The categories have no inherent order (we can't say one region is "more" than another in a meaningful ordered sense), so the level of measurement is nominal.
# Answer:
Qualitative, Nominal. Reason: Regions are categorical (qualitative) with no inherent order (nominal).

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QUESTION IMAGE

Question

Explanation:

Problem 7: Telephone numbers in a directory

Answer:

Problem 8: Heights of hot air balloons