sentence: Statistics talks about 'statistical errors' and 'residuals'.
sentences_before: It is not possible to do an exact measurement, but it is possible to say how accurate a measurement is. This is because one can measure the same thing again and again, and collect all the data together. This allows us to do statistics on the data.
sentences_after: In both cases what is meant is the difference between the observed or measured value and the real value, which is unknown.
concept_name: statistic
headings: Errors and residuals in statistics
categories: Statistics