1. The problem asks: By which of the following is data expressed in statistics? 2. Let's analyze each option: - A. Information: Data is raw facts, while information is processed data. Data leads to information but is not the same. - B. Number: Data can be expressed as numbers, especially quantitative data. - C. Mode: Mode is a measure of central tendency, a summary statistic, not the form of data itself. - D. Description: Description is a way to explain data but not the form data takes. 3. Therefore, the correct answer is B. Number, because data in statistics is often expressed as numbers. Final answer: B. Number