Given the dataset 1, 2, 2, 2, 3, 4, 5, what is the mode?

The mode of a dataset is defined as the value that appears most frequently. In this dataset: 1, 2, 2, 2, 3, 4, 5, the number 2 occurs three times, while all other values appear less frequently—1 appears once, 3 appears once, 4 appears once, and 5 appears once. Since 2 has the highest frequency of occurrence, it is classified as the mode. This makes it the correct choice in this scenario, as modes are used in statistics to identify trends and patterns in data sets. The concept of mode is particularly useful in understanding the most common or popular value within a dataset, which in this case is clearly demonstrated by the number of times 2 appears compared to the others.