Rough figures are estimates or approximations of numerical data. There are many synonyms for rough figures including ballpark figures, rough calculations, approximate numbers, back-of-the-envelope calculations, and quick estimates. Each of these terms conveys the idea that the numbers presented are not precise and may only give a general idea of the data. Other synonyms include rough draft, first approximation, and preliminary figures. It is important to note that while rough figures may not be entirely accurate, they can still be useful in making decisions or predicting outcomes. However, for more detailed analysis and precise information, it is necessary to use more precise data and calculations.