Six Sigma Green Belt Certification Practice Exam

Which of the following is an example of 'Attribute Data'?

1. Height of each student in 1st grade

2. Number of students with blue eyes in the 1st grade

3. Location of car dealerships in a large city

4. Outdoor temperature recorded each hour of a day

The correct answer is: Number of students with blue eyes in the 1st grade

Attribute data refers to categorical data that can be counted for recording the presence or absence of certain qualities or characteristics. In this case, counting the number of students with blue eyes is a prime example of attribute data because it involves assessing a specific appearance characteristic (eye color) and tallying the number of students who meet that criterion. In contrast, measuring the height of students involves continuous data – a quantitative measurement that can take on a range of values – which is classified as variable data rather than attribute data. The location of car dealerships is also categorical, but it doesn't involve counting specific counts or occurrences of a characteristic; instead, it describes positional data. Similarly, outdoor temperature measurements are examples of variable data, representing continuous values recorded at different times. Thus, "number of students with blue eyes in the 1st grade" is indeed the appropriate example of attribute data.