14. An IT department employee is identifying the Boolean data in a system. What is one example of this type of data?
Answer: B
Whether a number is positive or not
Boolean data represents two distinct states, typically true or false, and one clear example of this type of data is determining whether a number is positive or not.
A) The last name of a newly hired employee
The last name of a newly hired employee is a string of characters and does not fit the criteria for Boolean data, which only encompasses binary states. This option provides qualitative data rather than a true/false condition.
B) Whether a number is positive or not
This option accurately exemplifies Boolean data as it involves a binary decision: a number can either be positive (true) or not positive (false). This directly aligns with the definition of Boolean data in computer science.
C) The first letter of a person's last name
The first letter of a person's last name is categorical data, representing a single character rather than a Boolean state. It does not present a true/false dichotomy, thus failing to meet the criteria for Boolean data.
D) The price of gas in dollars and cents
The price of gas is quantitative data expressed in numerical form and does not represent a binary condition. Since it can take on a wide range of values rather than just two states, it is not an example of Boolean data.
Conclusion
In summary, the correct answer, "whether a number is positive or not," is a clear representation of Boolean data as it inherently involves a binary state. All other options fail to meet the definition of Boolean data, either representing qualitative or quantitative types instead. Understanding the distinction between these data types is crucial in fields like IT and data analysis.