Statistics is an area of applied mathematics which has been used since at least the 5th century BC. It is an area of mathematics which analyses data in all its forms, makes predictions on future data and if you’re in a gambling profession can land you a bucket load of cash… (Seriously though, don’t gamble until you’ve worked out your odds)
Statistics at A Level sets you off well for mathematics and statistics at degree level in that the fundamentals of many statistical concepts are cemented into knowledge and understanding at such an early stage.
In its application statistics is used on a daily basis in every business, financial sector and intergovernmental use for all different manner of reasons. For example in finance and business, an actuary would use statistics to develop understanding of how an investment or cut may shape a business. Or more specifically for governmental use, in recent months the statistics involved in the Brexit financial analysis has played a massive part in recent decisions.
The most emphasised foundation topic in statistics at highschool and A level is the fundamentals behind probability theory (which roots back to Gerolamo Cardano).
In terms of data analysis, statistics has paved the way for more complex and more sophisticated analysis of even larger set of data. This data can then be transformed into forms of distribution for visual context such as the Normal and Poisson distribution. But also, we can see how precise our data is through regression and correlation coefficients which give us tolerances in many fields such as anesthetics and engineering.
Statistics is everywhere and as time goes on the study of statistics is likely to increase even further.