In the data set {1, 2, 2, 3, 3, 3, 4}, what is the mode?

In the data set {1, 2, 2, 3, 3, 3, 4}, what is the mode?

• A. 1
• B. 2
• C. 3
• D. 4

Answer: (C)

The mode is the value that appears most often in a data set. In {1, 2, 2, 3, 3, 3, 4}, count how often each number shows up: 1 occurs once, 2 occurs twice, 3 occurs three times, and 4 occurs once. The number that appears most frequently is 3, so the mode is 3.

The mode is the value that appears most often in a data set. In {1, 2, 2, 3, 3, 3, 4}, count how often each number shows up: 1 occurs once, 2 occurs twice, 3 occurs three times, and 4 occurs once. The number that appears most frequently is 3, so the mode is 3.