Step 1: Understanding the Concept:
The mode is the value that appears most frequently in a given data set. A data set can have one mode (unimodal), more than one mode (multimodal), or no mode at all if all values appear with the same frequency.
Step 2: Detailed Explanation:
Let's look at the frequency of each number in the set $\{2, 3, 3, 5, 7\}$:
• 2 appears 1 time.
• 3 appears 2 times.
• 5 appears 1 time.
• 7 appears 1 time.
Since the number 3 appears more often than any other number in the set, it is the mode.
Step 3: Final Answer:
The mode of the data is 3.