Biostatistics is the branch of statistics responsible for properly interpreting scientific data from biology, public health, and other health sciences. It seeks to distinguish sources of variation in subjects' responses, such as different treatments or chance, and make valid inferences from samples to populations. Biostatisticians regularly collaborate across disciplines and advance statistical methods for biomedical applications. They are specialists in evaluating data as scientific evidence by designing experiments, analyzing data, and interpreting results to generalize findings in a meaningful way.