Consider the following statements about quantitative methods in history:

1. Quantitative methods involve the use of numerical data such as census records, economic data, and statistics in historical analysis.
2. The Annales School was one of the earliest proponents of using quantitative methods in historical research.
3. Quantitative methods are always used in conjunction with qualitative analysis in history.
4. Quantitative history often focuses on long-term trends and macroeconomic changes.

Which of the above statements are correct?