Algebra-1

Question Analysis
This question tests the student's ability to calculate the frequency of a specific interval in a histogram. The dataset and intervals are provided, and the student needs to count the number of data points that fall within the given interval.

Key Concept Explanation
In a histogram, the frequency of an interval is the number of data points that fall within that interval. This is represented by the height of the corresponding rectangle (bar) in the histogram.

Step-by-step Solution
1. Identify the dataset: {2, 4, 6, 8, 10, 12, 14, 16, 18, 20}