Question 65

Whether a number is positive or not

Boolean data represents two possible states, typically true/false or yes/no. An example of Boolean data is whether a number is positive or not, as it can only yield two outcomes: true (positive) or false (not positive).

A) The price of gas in dollars and cents

This option represents quantitative data, specifically a numerical value, rather than Boolean data. The price has a wide range of possible values and does not conform to the binary nature required for Boolean classification.

B) The first letter of a person’s last name

The first letter of a person’s last name is qualitative data, specifically categorical data. It can take on many different values (A, B, C, etc.) and does not fit the binary criteria of Boolean data.

C) The last name of a newly hired employee

Similar to Option B, this is also qualitative data and can take on an infinite number of values. It does not meet the Boolean requirement of representing two possible states.

D) Whether a number is positive or not

This option correctly identifies Boolean data, as it involves a binary decision: a number can either be positive (true) or not positive (false). This fits the definition of Boolean data perfectly.

Conclusion

The correct answer, whether a number is positive or not, exemplifies Boolean data as it is confined to two distinct states. In contrast, the other options represent qualitative or quantitative data that do not adhere to the binary nature of Boolean classification. Thus, D is the only option that accurately reflects the characteristics of Boolean data.