Quantitative vs Qualitative Data Types Quiz: AP Computer Science A Java

📚 Quick Study Guide

• 🔢 Quantitative Data: Represents numerical values that can be measured. Examples include integers (`int`), floating-point numbers (`double`, `float`). Mathematical operations can be performed on this type of data.
• 📊 Qualitative Data: Represents descriptive characteristics or qualities. Examples include strings (`String`), characters (`char`), and boolean values (`boolean`). Mathematical operations are generally not meaningful for qualitative data.
• 🧮 `int` vs. `double`: `int` stores whole numbers, while `double` stores decimal numbers. Choose the appropriate type based on the data you need to represent.
• 🖋️ `String` vs. `char`: `String` is a sequence of characters, while `char` represents a single character. `String` is used for text, while `char` is used for individual characters.
• ✔️ `boolean`: Represents a logical value that is either `true` or `false`. Useful for conditional statements and logical operations.

Practice Quiz

1. Which of the following data types is used to store numerical values that can include decimal points?

   1. int
   2. String
   3. double
   4. boolean

2. Which data type is most suitable for storing a person's name?

   1. int
   2. String
   3. double
   4. boolean

3. What type of data is represented by the value `true`?

   1. int
   2. String
   3. double
   4. boolean

4. Which data type is used to store a single character, like 'A'?

   1. int
   2. String
   3. double
   4. char

5. Which of the following is an example of quantitative data?

   1. A person's eye color
   2. The temperature in Celsius
   3. A product's name
   4. A student's grade (A, B, C)

6. Which of the following is an example of qualitative data?

   1. The number of cars in a parking lot
   2. The height of a building in meters
   3. A person's phone number
   4. The brand of a laptop

7. Which data type would you use to store the value 3.14159?

   1. int
   2. String
   3. boolean
   4. double