Last Digit

The last digits of a number often have properties of their own. Take for instance blood pressure readings which are traditionally often done to the nearest 5 or increasingly now to the nearest 2.

Thus, by mapping the last digit you can identify readings not done to the system you require or where an incorrect value has been entered. e.g. 7!

As with the first digit, if the last digit does not follow the expected pattern, the the data may be badly-entered, suspect or fraudulent.

See the related techniques for last digit.

Daisy has a mapping format, Last Digit, specifically for this analysis.