Quantitative data is numerical and is therefore useful for mathematical/statistical analysis and to be presented graphically. This is in contrast with qualitative data which is non-numerical and normally exists in the form of text. Positivists prefer this data as they consider it more objective in nature (although statistics can be manipulated) and they deem it more scientific. Interpretivists however argue that this form of data is not able to give a deep, valid or real picture of society. It can reveal trends and correlations but it cannot reveal valid reasons for either.